From 478a35e4ef280e86fa104217880eaad7811e1c5a Mon Sep 17 00:00:00 2001
From: Nikhil <nikhilsv92@gmail.com>
Date: Wed, 11 Feb 2026 14:03:02 -0800
Subject: [PATCH] feat: chromium 145 upgrade (#362)

* feat: new apply --force

* chore: update chromium version

* feat: chromium 145 updated patches

* fix: disable series patches for nwo

* chore: bump offset + version

---------

Co-authored-by: Nikhil <shadowfax@mac.local.meter>
---
 packages/browseros/CHROMIUM_VERSION           |   6 +-
 packages/browseros/build/cli/dev.py           |  31 +++
 .../build/config/BROWSEROS_BUILD_OFFSET       |   2 +-
 .../browseros/build/modules/apply/__init__.py |   3 +
 .../build/modules/apply/apply_force.py        | 196 ++++++++++++++++++
 .../chrome/app/chrome_command_ids.h           |  15 +-
 .../browseros/core/browseros_constants.h      |  17 +-
 .../browseros_extension_installer.cc          |  15 +-
 .../browseros_extension_installer.h           |   7 +-
 .../browseros_extension_maintainer.cc         |  12 +-
 .../browseros_extension_maintainer.h          |   7 +-
 .../metrics/browseros_metrics_service.cc      |   6 +-
 .../metrics/browseros_metrics_service.h       |   7 +-
 .../server/browseros_server_manager.cc        |   5 +-
 .../server/browseros_server_proxy.cc          |   6 +-
 .../browseros/server/browseros_server_proxy.h |   7 +-
 .../server/browseros_server_updater.cc        |  17 +-
 .../server/browseros_server_updater.h         |   9 +-
 .../server/browseros_server_utils.cc          |   7 +-
 .../browser/chrome_content_browser_client.cc  |  12 +-
 .../chrome/browser/extensions/BUILD.gn        |  16 +-
 .../api/browser_os/browser_os_api.cc          |  20 +-
 .../api/browser_os/browser_os_api.h           |   8 +-
 .../api/side_panel/side_panel_service.cc      |   7 +-
 .../chrome_extensions_browser_api_provider.cc |  12 +-
 .../extension_context_menu_model.cc           |   8 +-
 .../chrome/browser/flag_descriptions.cc       |  24 ---
 .../chrome/browser/flag_descriptions.h        |  33 +--
 .../chrome/browser/importer/profile_writer.cc |  11 +-
 .../prefs/chrome_syncable_prefs_database.cc   |  17 +-
 .../chrome/browser/ui/BUILD.gn                |  12 +-
 .../chrome/browser/ui/browser_actions.cc      |  14 +-
 .../chrome/browser/ui/browser_commands.cc     |   6 +-
 .../chrome/browser/ui/browser_ui_prefs.cc     |  13 +-
 .../internal/browser_window_features.cc       |  15 +-
 .../public/browser_window_features.h          |  14 +-
 .../ui/omnibox/chrome_omnibox_client.cc       |   8 +-
 .../ui/toolbar/app_menu_icon_controller.cc    |  11 +-
 .../chrome/browser/ui/ui_features.cc          |  43 +---
 .../chrome/browser/ui/ui_features.h           |  12 +-
 .../ui/views/chrome_layout_provider.cc        |  15 +-
 .../extensions/extension_side_panel_utils.cc  |  12 +-
 .../browser/ui/views/side_panel/side_panel.cc |  19 +-
 .../browser/ui/views/side_panel/side_panel.h  |  11 +-
 .../third_party_llm_panel_coordinator.cc      |  19 +-
 .../ui/webui/help/version_updater_mac.mm      |  16 +-
 .../customize_toolbar/customize_toolbar.mojom |   7 +-
 .../customize_toolbar_handler.cc              |  18 +-
 .../chrome/common/pref_names.h                |  11 +-
 .../install_static/chromium_install_modes.h   |  23 +-
 .../browseros/chrome_bookmarks_importer.cc    |   9 +-
 .../browseros/chrome_cookie_importer.cc       |   7 +-
 .../browseros/chrome_decryptor_win.cc         |   4 +-
 .../browseros/chrome_password_importer.cc     |   7 +-
 .../infobars/core/infobar_delegate.h          |   9 +-
 .../{sync => common}/keychain_password_mac.mm |  11 +-
 .../extension_function_histogram_value.h      |  61 +++---
 .../histograms/metadata/browser/enums.xml     |   8 +-
 .../histograms/metadata/extensions/enums.xml  |  60 +++---
 .../browseros/resources/BROWSEROS_VERSION     |   4 +-
 packages/browseros/series_patches/series      |   2 +-
 .../browseros/series_patches/series.windows   |  10 +-
 62 files changed, 628 insertions(+), 406 deletions(-)
 create mode 100644 packages/browseros/build/modules/apply/apply_force.py
 delete mode 100644 packages/browseros/chromium_patches/chrome/browser/flag_descriptions.cc
 rename packages/browseros/chromium_patches/components/os_crypt/{sync => common}/keychain_password_mac.mm (55%)

diff --git a/packages/browseros/CHROMIUM_VERSION b/packages/browseros/CHROMIUM_VERSION
index 8c48fcf3e..c62ec814b 100644
--- a/packages/browseros/CHROMIUM_VERSION
+++ b/packages/browseros/CHROMIUM_VERSION
@@ -1,4 +1,4 @@
-MAJOR=142
+MAJOR=145
 MINOR=0
-BUILD=7444
-PATCH=49
+BUILD=7632
+PATCH=46
diff --git a/packages/browseros/build/cli/dev.py b/packages/browseros/build/cli/dev.py
index 25c1b033b..4733457c9 100755
--- a/packages/browseros/build/cli/dev.py
+++ b/packages/browseros/build/cli/dev.py
@@ -364,6 +364,37 @@ def apply_patch_cmd(
     log_success(f"Successfully applied patch for: {chromium_path}")
 
 
+@apply_app.command(name="force")
+def apply_force(
+    reset_to: Optional[str] = Option(
+        None, "--reset-to", "-r", help="Reset files to this commit before applying patches"
+    ),
+):
+    """Apply all patches non-interactively, writing .rej files for conflicts.
+
+    Applies every patch without prompting. When a patch conflicts, uses
+    git apply --reject to apply what it can and write .rej files for
+    failed hunks, then continues to the next patch.
+
+    Examples:
+        browseros dev apply force -S /chromium
+        browseros dev apply force --reset-to base -S /chromium
+    """
+    ctx = create_build_context(state.chromium_src)
+    if not ctx:
+        raise typer.Exit(1)
+
+    from ..modules.apply import ApplyForceModule
+
+    module = ApplyForceModule()
+    try:
+        module.validate(ctx)
+        module.execute(ctx, reset_to=reset_to)
+    except Exception as e:
+        log_error(f"Failed to apply patches: {e}")
+        raise typer.Exit(1)
+
+
 @apply_app.command(name="changed")
 def apply_changed(
     commit: Optional[str] = Option(
diff --git a/packages/browseros/build/config/BROWSEROS_BUILD_OFFSET b/packages/browseros/build/config/BROWSEROS_BUILD_OFFSET
index 9289ddcee..9f54fe313 100644
--- a/packages/browseros/build/config/BROWSEROS_BUILD_OFFSET
+++ b/packages/browseros/build/config/BROWSEROS_BUILD_OFFSET
@@ -1 +1 @@
-121
+122
diff --git a/packages/browseros/build/modules/apply/__init__.py b/packages/browseros/build/modules/apply/__init__.py
index 382af37dd..cded489b6 100644
--- a/packages/browseros/build/modules/apply/__init__.py
+++ b/packages/browseros/build/modules/apply/__init__.py
@@ -12,6 +12,7 @@ from .apply_all import apply_all_patches, ApplyAllModule
 from .apply_feature import apply_feature_patches, ApplyFeatureModule
 from .apply_patch import apply_single_file_patch
 from .apply_changed import apply_changed_patches, ApplyChangedModule
+from .apply_force import apply_all_force, ApplyForceModule
 
 __all__ = [
     "apply_all_patches",
@@ -21,4 +22,6 @@ __all__ = [
     "apply_single_file_patch",
     "apply_changed_patches",
     "ApplyChangedModule",
+    "apply_all_force",
+    "ApplyForceModule",
 ]
diff --git a/packages/browseros/build/modules/apply/apply_force.py b/packages/browseros/build/modules/apply/apply_force.py
new file mode 100644
index 000000000..1edb6d43a
--- /dev/null
+++ b/packages/browseros/build/modules/apply/apply_force.py
@@ -0,0 +1,196 @@
+"""
+Apply Force - Non-interactive apply that uses --reject for conflicts.
+
+When a patch fails to apply cleanly, falls back to `git apply --reject`
+which applies what it can and writes .rej files for failed hunks.
+Always continues to the next patch regardless of failures.
+"""
+
+from pathlib import Path
+from typing import List, Tuple, Optional
+
+from ...common.context import Context
+from ...common.module import CommandModule, ValidationError
+from ...common.utils import log_info, log_error, log_warning, log_success
+from .common import find_patch_files
+from .utils import run_git_command, file_exists_in_commit, reset_file_to_commit
+
+
+def apply_patch_with_reject(
+    patch_path: Path,
+    chromium_src: Path,
+    relative_to: Optional[Path] = None,
+    reset_to: Optional[str] = None,
+) -> Tuple[str, Optional[str]]:
+    """Apply a single patch, falling back to --reject on conflict.
+
+    Args:
+        patch_path: Path to the patch file
+        chromium_src: Chromium source directory
+        relative_to: Base path for displaying relative paths
+        reset_to: Commit to reset file to before applying
+
+    Returns:
+        Tuple of (status, rej_files) where status is one of:
+        - "applied": patch applied cleanly (rej_files is [])
+        - "rejected": patch had conflicts, .rej files written (rej_files has full paths)
+        - "failed": patch could not be applied at all
+    """
+    display_path = patch_path.relative_to(relative_to) if relative_to else patch_path
+
+    # Reset file to base commit if requested
+    if reset_to:
+        file_path = str(display_path)
+        if file_exists_in_commit(file_path, reset_to, chromium_src):
+            reset_file_to_commit(file_path, reset_to, chromium_src)
+        else:
+            target_file = chromium_src / file_path
+            if target_file.exists():
+                target_file.unlink()
+
+    # Try clean apply first (same strategy as common.apply_single_patch)
+    result = run_git_command(
+        [
+            "git", "apply",
+            "--ignore-whitespace", "--whitespace=nowarn",
+            "-p1", str(patch_path),
+        ],
+        cwd=chromium_src,
+    )
+
+    if result.returncode == 0:
+        log_success(f"  Applied: {display_path}")
+        return "applied", []
+
+    # Try 3-way merge
+    result = run_git_command(
+        [
+            "git", "apply",
+            "--ignore-whitespace", "--whitespace=nowarn",
+            "-p1", "--3way",
+            str(patch_path),
+        ],
+        cwd=chromium_src,
+    )
+
+    if result.returncode == 0:
+        log_success(f"  Applied (3way): {display_path}")
+        return "applied", []
+
+    # Fall back to --reject: applies what it can, writes .rej for the rest
+    result = run_git_command(
+        [
+            "git", "apply",
+            "--ignore-whitespace", "--whitespace=nowarn",
+            "-p1", "--reject",
+            str(patch_path),
+        ],
+        cwd=chromium_src,
+    )
+
+    if result.returncode == 0:
+        # --reject returned 0 means it applied (possibly with warnings)
+        log_success(f"  Applied (reject): {display_path}")
+        return "applied", []
+    else:
+        # Some hunks failed - .rej files were written
+        log_warning(f"  Conflict: {display_path}")
+        # Find .rej files created for this patch
+        rej_path = chromium_src / f"{display_path}.rej"
+        rej_files = []
+        if rej_path.exists():
+            rej_files.append(str(rej_path))
+            log_warning(f"    .rej: {rej_path}")
+        return "rejected", rej_files
+
+
+def apply_all_force(
+    build_ctx: Context,
+    reset_to: Optional[str] = None,
+) -> Tuple[int, int, List[str]]:
+    """Apply all patches non-interactively, using --reject for conflicts.
+
+    Args:
+        build_ctx: Build context
+        reset_to: Commit to reset files to before applying
+
+    Returns:
+        Tuple of (applied_count, rejected_count, failed_list)
+    """
+    patches_dir = build_ctx.get_patches_dir()
+
+    if not patches_dir.exists():
+        log_warning(f"Patches directory does not exist: {patches_dir}")
+        return 0, 0, []
+
+    patch_files = find_patch_files(patches_dir)
+
+    if not patch_files:
+        log_warning("No patch files found")
+        return 0, 0, []
+
+    log_info(f"Found {len(patch_files)} patches (non-interactive, --reject on conflict)")
+
+    applied = 0
+    rejected = 0
+    failed = []
+    all_rej_files: List[str] = []
+
+    for patch_path in patch_files:
+        display_name = str(patch_path.relative_to(patches_dir))
+
+        if not patch_path.exists():
+            log_warning(f"  Patch not found: {display_name}")
+            failed.append(display_name)
+            continue
+
+        status, rej_files = apply_patch_with_reject(
+            patch_path, build_ctx.chromium_src, patches_dir, reset_to
+        )
+
+        if status == "applied":
+            applied += 1
+        elif status == "rejected":
+            rejected += 1
+            failed.append(display_name)
+            all_rej_files.extend(rej_files)
+        else:
+            failed.append(display_name)
+
+    # Summary
+    log_info(f"\nSummary: {applied} applied, {rejected} rejected (.rej), {len(failed)} total failed")
+
+    if all_rej_files:
+        log_warning("Reject files:")
+        for rej in all_rej_files:
+            log_warning(f"  {rej}")
+
+    return applied, rejected, failed
+
+
+class ApplyForceModule(CommandModule):
+    """Non-interactive apply with --reject for conflicts"""
+
+    produces = []
+    requires = []
+    description = "Apply all patches non-interactively, writing .rej files for conflicts"
+
+    def validate(self, ctx: Context) -> None:
+        import shutil
+
+        if not shutil.which("git"):
+            raise ValidationError("Git is not available in PATH")
+        if not ctx.chromium_src.exists():
+            raise ValidationError(f"Chromium source not found: {ctx.chromium_src}")
+
+    def execute(
+        self,
+        ctx: Context,
+        reset_to: Optional[str] = None,
+        **kwargs,
+    ) -> None:
+        applied, rejected, failed = apply_all_force(ctx, reset_to=reset_to)
+        if rejected > 0:
+            log_warning(
+                f"{rejected} patch(es) had conflicts. Review .rej files in chromium source."
+            )
diff --git a/packages/browseros/chromium_patches/chrome/app/chrome_command_ids.h b/packages/browseros/chromium_patches/chrome/app/chrome_command_ids.h
index 6e3aea9e4..e5900ffc6 100644
--- a/packages/browseros/chromium_patches/chrome/app/chrome_command_ids.h
+++ b/packages/browseros/chromium_patches/chrome/app/chrome_command_ids.h
@@ -1,15 +1,16 @@
 diff --git a/chrome/app/chrome_command_ids.h b/chrome/app/chrome_command_ids.h
-index d32aa215bc900..237fd55fe2aaf 100644
+index 650fa7987ac19..d685c16726d1c 100644
 --- a/chrome/app/chrome_command_ids.h
 +++ b/chrome/app/chrome_command_ids.h
-@@ -298,6 +298,10 @@
- #define IDC_SHOW_SEARCH_TOOLS  40296
+@@ -304,6 +304,11 @@
  #define IDC_SHOW_COMMENTS_SIDE_PANEL  40297
  #define IDC_RECENT_TABS_SEE_DEVICE_TABS  40298
-+#define IDC_SHOW_THIRD_PARTY_LLM_SIDE_PANEL  40299
-+#define IDC_CYCLE_THIRD_PARTY_LLM_PROVIDER  40300
-+#define IDC_OPEN_CLASH_OF_GPTS               40301
-+#define IDC_TOGGLE_BROWSEROS_AGENT           40302
+ #define IDC_SHOW_AI_MODE_OMNIBOX_BUTTON 40299
++// BrowserOS: custom command IDs
++#define IDC_SHOW_THIRD_PARTY_LLM_SIDE_PANEL  40300
++#define IDC_CYCLE_THIRD_PARTY_LLM_PROVIDER  40301
++#define IDC_OPEN_CLASH_OF_GPTS               40302
++#define IDC_TOGGLE_BROWSEROS_AGENT           40303
  
  // Spell-check
  // Insert any additional suggestions before _LAST; these have to be consecutive.
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/core/browseros_constants.h b/packages/browseros/chromium_patches/chrome/browser/browseros/core/browseros_constants.h
index 39153400b..f4f1916ca 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/core/browseros_constants.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/core/browseros_constants.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/core/browseros_constants.h b/chrome/browser/browseros/core/browseros_constants.h
 new file mode 100644
-index 0000000000000..476d761245673
+index 0000000000000..adc52f61b9771
 --- /dev/null
 +++ b/chrome/browser/browseros/core/browseros_constants.h
-@@ -0,0 +1,222 @@
+@@ -0,0 +1,223 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -13,6 +13,7 @@ index 0000000000000..476d761245673
 +
 +#include <cstddef>
 +#include <string>
++#include <string_view>
 +#include <vector>
 +
 +#include "base/command_line.h"
@@ -81,7 +82,7 @@ index 0000000000000..476d761245673
 +
 +// Find a route for a given virtual path (e.g., "/ai")
 +// Returns nullptr if no matching route found
-+inline const BrowserOSURLRoute* FindBrowserOSRoute(const std::string& path) {
++inline const BrowserOSURLRoute* FindBrowserOSRoute(std::string_view path) {
 +  for (const auto& route : kBrowserOSURLRoutes) {
 +    if (path == route.virtual_path) {
 +      return &route;
@@ -93,7 +94,7 @@ index 0000000000000..476d761245673
 +// Get the extension URL for a chrome://browseros/* path
 +// Returns empty string if no matching route or if URL overrides are disabled
 +// Example: "/ai" -> "chrome-extension://bflp.../options.html#ai"
-+inline std::string GetBrowserOSExtensionURL(const std::string& virtual_path) {
++inline std::string GetBrowserOSExtensionURL(std::string_view virtual_path) {
 +  if (IsURLOverridesDisabled()) {
 +    return std::string();
 +  }
@@ -118,15 +119,15 @@ index 0000000000000..476d761245673
 +//   extension_path: from url.path(), e.g., "/options.html"
 +//   extension_ref: from url.ref(), e.g., "ai" or "/ai" (normalized internally)
 +// Fallback: If no exact hash match, falls back to route with empty hash for same page
-+inline std::string GetBrowserOSVirtualURL(const std::string& extension_id,
-+                                          const std::string& extension_path,
-+                                          const std::string& extension_ref) {
++inline std::string GetBrowserOSVirtualURL(std::string_view extension_id,
++                                          std::string_view extension_path,
++                                          std::string_view extension_ref) {
 +  if (IsURLOverridesDisabled()) {
 +    return std::string();
 +  }
 +
 +  // Normalize ref - strip leading slash if present (handles both #ai and #/ai)
-+  std::string normalized_ref = extension_ref;
++  std::string normalized_ref(extension_ref);
 +  if (!normalized_ref.empty() && normalized_ref[0] == '/') {
 +    normalized_ref = normalized_ref.substr(1);
 +  }
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.cc
index 33cf6b4f5..948fddee4 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.cc
@@ -1,15 +1,16 @@
 diff --git a/chrome/browser/browseros/extensions/browseros_extension_installer.cc b/chrome/browser/browseros/extensions/browseros_extension_installer.cc
 new file mode 100644
-index 0000000000000..e84ab10537ec4
+index 0000000000000..27fadedbd37ef
 --- /dev/null
 +++ b/chrome/browser/browseros/extensions/browseros_extension_installer.cc
-@@ -0,0 +1,338 @@
+@@ -0,0 +1,341 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
 +
 +#include "chrome/browser/browseros/extensions/browseros_extension_installer.h"
 +
++#include <optional>
 +#include <utility>
 +
 +#include "base/feature_list.h"
@@ -124,7 +125,8 @@ index 0000000000000..e84ab10537ec4
 +    return base::Value::Dict();
 +  }
 +
-+  std::optional<base::Value> parsed = base::JSONReader::Read(json_content);
++  std::optional<base::Value> parsed =
++      base::JSONReader::Read(json_content, base::JSON_PARSE_RFC);
 +  if (!parsed || !parsed->is_dict()) {
 +    LOG(ERROR) << "browseros: Invalid bundled manifest JSON";
 +    return base::Value::Dict();
@@ -234,8 +236,8 @@ index 0000000000000..e84ab10537ec4
 +}
 +
 +void BrowserOSExtensionInstaller::OnRemoteFetchComplete(
-+    std::unique_ptr<std::string> response_body) {
-+  if (!response_body) {
++    std::optional<std::string> response_body) {
++  if (!response_body.has_value()) {
 +    LOG(ERROR) << "browseros: Failed to fetch config";
 +    Complete(InstallResult());
 +    return;
@@ -317,7 +319,8 @@ index 0000000000000..e84ab10537ec4
 +
 +base::Value::Dict BrowserOSExtensionInstaller::ParseConfigJson(
 +    const std::string& json_content) {
-+  std::optional<base::Value> parsed = base::JSONReader::Read(json_content);
++  std::optional<base::Value> parsed =
++      base::JSONReader::Read(json_content, base::JSON_PARSE_RFC);
 +
 +  if (!parsed || !parsed->is_dict()) {
 +    LOG(ERROR) << "browseros: Invalid config JSON";
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.h b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.h
index 09d43835a..08c667071 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_installer.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/extensions/browseros_extension_installer.h b/chrome/browser/browseros/extensions/browseros_extension_installer.h
 new file mode 100644
-index 0000000000000..7502da6d31ff5
+index 0000000000000..9a3c2000ed05a
 --- /dev/null
 +++ b/chrome/browser/browseros/extensions/browseros_extension_installer.h
-@@ -0,0 +1,99 @@
+@@ -0,0 +1,100 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -12,6 +12,7 @@ index 0000000000000..7502da6d31ff5
 +#define CHROME_BROWSER_BROWSEROS_EXTENSIONS_BROWSEROS_EXTENSION_INSTALLER_H_
 +
 +#include <memory>
++#include <optional>
 +#include <set>
 +#include <string>
 +
@@ -81,7 +82,7 @@ index 0000000000000..7502da6d31ff5
 +  void FetchFromRemote();
 +
 +  // Called when remote fetch completes.
-+  void OnRemoteFetchComplete(std::unique_ptr<std::string> response_body);
++  void OnRemoteFetchComplete(std::optional<std::string> response_body);
 +
 +  // Parses config JSON and returns extensions dict.
 +  base::Value::Dict ParseConfigJson(const std::string& json_content);
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc
index 90fed5f75..e3fb0abec 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc
@@ -1,15 +1,16 @@
 diff --git a/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc b/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc
 new file mode 100644
-index 0000000000000..fec50b08b130c
+index 0000000000000..404fb31de4e55
 --- /dev/null
 +++ b/chrome/browser/browseros/extensions/browseros_extension_maintainer.cc
-@@ -0,0 +1,381 @@
+@@ -0,0 +1,383 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
 +
 +#include "chrome/browser/browseros/extensions/browseros_extension_maintainer.h"
 +
++#include <optional>
 +#include <utility>
 +
 +#include "base/json/json_reader.h"
@@ -124,8 +125,8 @@ index 0000000000000..fec50b08b130c
 +
 +void BrowserOSExtensionMaintainer::OnConfigFetched(
 +    std::unique_ptr<network::SimpleURLLoader> loader,
-+    std::unique_ptr<std::string> response_body) {
-+  if (response_body) {
++    std::optional<std::string> response_body) {
++  if (response_body.has_value()) {
 +    base::Value::Dict config = ParseConfigJson(*response_body);
 +    if (!config.empty()) {
 +      last_config_ = std::move(config);
@@ -147,7 +148,8 @@ index 0000000000000..fec50b08b130c
 +
 +base::Value::Dict BrowserOSExtensionMaintainer::ParseConfigJson(
 +    const std::string& json_content) {
-+  std::optional<base::Value> parsed = base::JSONReader::Read(json_content);
++  std::optional<base::Value> parsed =
++      base::JSONReader::Read(json_content, base::JSON_PARSE_RFC);
 +
 +  if (!parsed || !parsed->is_dict()) {
 +    LOG(ERROR) << "browseros: Invalid config JSON";
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.h b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.h
index 28def69c2..5225e72ce 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/extensions/browseros_extension_maintainer.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/extensions/browseros_extension_maintainer.h b/chrome/browser/browseros/extensions/browseros_extension_maintainer.h
 new file mode 100644
-index 0000000000000..e7e228e6fd71e
+index 0000000000000..eb68969a4163f
 --- /dev/null
 +++ b/chrome/browser/browseros/extensions/browseros_extension_maintainer.h
-@@ -0,0 +1,83 @@
+@@ -0,0 +1,84 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -12,6 +12,7 @@ index 0000000000000..e7e228e6fd71e
 +#define CHROME_BROWSER_BROWSEROS_EXTENSIONS_BROWSEROS_EXTENSION_MAINTAINER_H_
 +
 +#include <memory>
++#include <optional>
 +#include <set>
 +#include <string>
 +
@@ -56,7 +57,7 @@ index 0000000000000..e7e228e6fd71e
 +
 +  // Called when config fetch completes.
 +  void OnConfigFetched(std::unique_ptr<network::SimpleURLLoader> loader,
-+                       std::unique_ptr<std::string> response_body);
++                       std::optional<std::string> response_body);
 +
 +  // Parses config JSON and returns extensions dict.
 +  base::Value::Dict ParseConfigJson(const std::string& json_content);
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.cc
index 8b7df80ec..af9cb2804 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.cc
@@ -1,6 +1,6 @@
 diff --git a/chrome/browser/browseros/metrics/browseros_metrics_service.cc b/chrome/browser/browseros/metrics/browseros_metrics_service.cc
 new file mode 100644
-index 0000000000000..8c8c588df4481
+index 0000000000000..cbc1f29e5d407
 --- /dev/null
 +++ b/chrome/browser/browseros/metrics/browseros_metrics_service.cc
 @@ -0,0 +1,231 @@
@@ -198,7 +198,7 @@ index 0000000000000..8c8c588df4481
 +
 +void BrowserOSMetricsService::OnPostHogResponse(
 +    std::unique_ptr<network::SimpleURLLoader> loader,
-+    std::unique_ptr<std::string> response_body) {
++    std::optional<std::string> response_body) {
 +  int response_code = 0;
 +  if (loader->ResponseInfo() && loader->ResponseInfo()->headers) {
 +    response_code = loader->ResponseInfo()->headers->response_code();
@@ -209,7 +209,7 @@ index 0000000000000..8c8c588df4481
 +  } else {
 +    LOG(WARNING) << "browseros: Failed to send metrics event. Response code: "
 +                 << response_code;
-+    if (response_body && !response_body->empty()) {
++    if (response_body.has_value() && !response_body->empty()) {
 +      LOG(WARNING) << "browseros: Error response: " << *response_body;
 +    }
 +  }
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.h b/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.h
index d687e0503..3f95133b0 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/metrics/browseros_metrics_service.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/metrics/browseros_metrics_service.h b/chrome/browser/browseros/metrics/browseros_metrics_service.h
 new file mode 100644
-index 0000000000000..2157d1eb1698e
+index 0000000000000..beadbcfd183e0
 --- /dev/null
 +++ b/chrome/browser/browseros/metrics/browseros_metrics_service.h
-@@ -0,0 +1,95 @@
+@@ -0,0 +1,96 @@
 +// Copyright 2025 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -12,6 +12,7 @@ index 0000000000000..2157d1eb1698e
 +#define CHROME_BROWSER_BROWSEROS_METRICS_BROWSEROS_METRICS_SERVICE_H_
 +
 +#include <memory>
++#include <optional>
 +#include <string>
 +
 +#include "base/functional/callback.h"
@@ -72,7 +73,7 @@ index 0000000000000..2157d1eb1698e
 +
 +  // Handles the response from PostHog API.
 +  void OnPostHogResponse(std::unique_ptr<network::SimpleURLLoader> loader,
-+                         std::unique_ptr<std::string> response_body);
++                         std::optional<std::string> response_body);
 +
 +  // Adds default properties to the event.
 +  void AddDefaultProperties(base::Value::Dict& properties);
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_manager.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_manager.cc
index 9a5215ec5..1408ad4a3 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_manager.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_manager.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_manager.cc b/chrome/browser/browseros/server/browseros_server_manager.cc
 new file mode 100644
-index 0000000000000..6d44b32b78ce8
+index 0000000000000..87a0c20a2c67e
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_manager.cc
-@@ -0,0 +1,1061 @@
+@@ -0,0 +1,1062 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -14,6 +14,7 @@ index 0000000000000..6d44b32b78ce8
 +#include <set>
 +
 +#include "base/command_line.h"
++#include "base/functional/callback_helpers.h"
 +#include "base/files/file_path.h"
 +#include "base/files/file_util.h"
 +#include "base/logging.h"
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.cc
index c4b6a9e88..ce5d3c955 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.cc
@@ -1,6 +1,6 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_proxy.cc b/chrome/browser/browseros/server/browseros_server_proxy.cc
 new file mode 100644
-index 0000000000000..7ffdb8f011b08
+index 0000000000000..17560c9a2c55a
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_proxy.cc
 @@ -0,0 +1,225 @@
@@ -193,7 +193,7 @@ index 0000000000000..7ffdb8f011b08
 +
 +void BrowserOSServerProxy::OnBackendResponse(
 +    int connection_id,
-+    std::unique_ptr<std::string> response_body) {
++    std::optional<std::string> response_body) {
 +  auto it = pending_loaders_.find(connection_id);
 +  if (it == pending_loaders_.end() || !server_) {
 +    return;
@@ -208,7 +208,7 @@ index 0000000000000..7ffdb8f011b08
 +    response_code = response_info->headers->response_code();
 +  }
 +
-+  if (!response_body || response_code == 0) {
++  if (!response_body.has_value() || response_code == 0) {
 +    Send503(server_.get(), connection_id);
 +    return;
 +  }
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.h b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.h
index 9443858d8..ed7706d66 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_proxy.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_proxy.h b/chrome/browser/browseros/server/browseros_server_proxy.h
 new file mode 100644
-index 0000000000000..30474fa5001df
+index 0000000000000..586296d473849
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_proxy.h
-@@ -0,0 +1,78 @@
+@@ -0,0 +1,79 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -12,6 +12,7 @@ index 0000000000000..30474fa5001df
 +#define CHROME_BROWSER_BROWSEROS_SERVER_BROWSEROS_SERVER_PROXY_H_
 +
 +#include <memory>
++#include <optional>
 +#include <string>
 +
 +#include "base/containers/flat_map.h"
@@ -68,7 +69,7 @@ index 0000000000000..30474fa5001df
 +  void ForwardRequest(int connection_id,
 +                      const net::HttpServerRequestInfo& info);
 +  void OnBackendResponse(int connection_id,
-+                         std::unique_ptr<std::string> response_body);
++                         std::optional<std::string> response_body);
 +
 +  std::unique_ptr<net::HttpServer> server_;
 +  base::flat_map<int, std::unique_ptr<network::SimpleURLLoader>>
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.cc
index d9e595daa..8546a33e9 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.cc
@@ -1,15 +1,17 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_updater.cc b/chrome/browser/browseros/server/browseros_server_updater.cc
 new file mode 100644
-index 0000000000000..ced363ffbabc2
+index 0000000000000..9050130727fc8
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_updater.cc
-@@ -0,0 +1,1075 @@
+@@ -0,0 +1,1078 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
 +
 +#include "chrome/browser/browseros/server/browseros_server_updater.h"
 +
++#include <optional>
++
 +#include "base/base64.h"
 +#include "base/command_line.h"
 +#include "base/feature_list.h"
@@ -452,8 +454,8 @@ index 0000000000000..ced363ffbabc2
 +}
 +
 +void BrowserOSServerUpdater::OnAppcastFetched(
-+    std::unique_ptr<std::string> response) {
-+  if (!response) {
++    std::optional<std::string> response) {
++  if (!response.has_value()) {
 +    int net_error = appcast_loader_->NetError();
 +    OnError("check",
 +            "Failed to fetch appcast: " + net::ErrorToString(net_error));
@@ -726,8 +728,8 @@ index 0000000000000..ced363ffbabc2
 +}
 +
 +void BrowserOSServerUpdater::OnStatusFetched(
-+    std::unique_ptr<std::string> response) {
-+  if (!response) {
++    std::optional<std::string> response) {
++  if (!response.has_value()) {
 +    int net_error = status_loader_->NetError();
 +    LOG(WARNING) << "browseros: Failed to fetch server status: "
 +                 << net::ErrorToString(net_error)
@@ -736,7 +738,8 @@ index 0000000000000..ced363ffbabc2
 +    return;
 +  }
 +
-+  std::optional<base::Value> json = base::JSONReader::Read(*response);
++  std::optional<base::Value> json =
++      base::JSONReader::Read(*response, base::JSON_PARSE_RFC);
 +  if (!json || !json->is_dict()) {
 +    LOG(WARNING)
 +        << "browseros: Invalid status response, proceeding with update";
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.h b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.h
index eaba80c5f..3e3bf952d 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.h
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_updater.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_updater.h b/chrome/browser/browseros/server/browseros_server_updater.h
 new file mode 100644
-index 0000000000000..022b703a32e8d
+index 0000000000000..a7edcdd9d98ee
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_updater.h
-@@ -0,0 +1,164 @@
+@@ -0,0 +1,165 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -12,6 +12,7 @@ index 0000000000000..022b703a32e8d
 +#define CHROME_BROWSER_BROWSEROS_SERVER_BROWSEROS_SERVER_UPDATER_H_
 +
 +#include <memory>
++#include <optional>
 +#include <string>
 +
 +#include "base/files/file_path.h"
@@ -76,7 +77,7 @@ index 0000000000000..022b703a32e8d
 +
 +  // Appcast flow
 +  void FetchAppcast();
-+  void OnAppcastFetched(std::unique_ptr<std::string> response);
++  void OnAppcastFetched(std::optional<std::string> response);
 +
 +  // Download flow
 +  void CheckVersionAlreadyDownloaded(const AppcastEnclosure& enclosure,
@@ -105,7 +106,7 @@ index 0000000000000..022b703a32e8d
 +
 +  // Hot-swap flow
 +  void CheckServerStatus();
-+  void OnStatusFetched(std::unique_ptr<std::string> response);
++  void OnStatusFetched(std::optional<std::string> response);
 +  void OnServerStatusChecked(bool can_update);
 +  void PerformHotSwap(const base::Version& version);
 +  void OnHotSwapComplete(const base::Version& old_version,
diff --git a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_utils.cc b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_utils.cc
index 9d5ff9c92..bf830d202 100644
--- a/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_utils.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/browseros/server/browseros_server_utils.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/browseros/server/browseros_server_utils.cc b/chrome/browser/browseros/server/browseros_server_utils.cc
 new file mode 100644
-index 0000000000000..9aca12ed05475
+index 0000000000000..867dbf4699f17
 --- /dev/null
 +++ b/chrome/browser/browseros/server/browseros_server_utils.cc
-@@ -0,0 +1,517 @@
+@@ -0,0 +1,518 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -275,7 +275,8 @@ index 0000000000000..9aca12ed05475
 +    return std::nullopt;
 +  }
 +
-+  std::optional<base::Value> parsed = base::JSONReader::Read(contents);
++  std::optional<base::Value> parsed =
++      base::JSONReader::Read(contents, base::JSON_PARSE_RFC);
 +  if (!parsed || !parsed->is_dict()) {
 +    LOG(WARNING) << "browseros: Invalid state file format";
 +    return std::nullopt;
diff --git a/packages/browseros/chromium_patches/chrome/browser/chrome_content_browser_client.cc b/packages/browseros/chromium_patches/chrome/browser/chrome_content_browser_client.cc
index f9438b588..e48e6bf59 100644
--- a/packages/browseros/chromium_patches/chrome/browser/chrome_content_browser_client.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/chrome_content_browser_client.cc
@@ -1,8 +1,8 @@
 diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
-index 0ab10486a183c..e25fbac661e4d 100644
+index 90eec90d4ef45..da7beb4a4547e 100644
 --- a/chrome/browser/chrome_content_browser_client.cc
 +++ b/chrome/browser/chrome_content_browser_client.cc
-@@ -613,6 +613,7 @@
+@@ -598,6 +598,7 @@
  #endif
  
  #if BUILDFLAG(ENABLE_EXTENSIONS_CORE)
@@ -10,7 +10,7 @@ index 0ab10486a183c..e25fbac661e4d 100644
  #include "chrome/browser/extensions/chrome_content_browser_client_extensions_part.h"
  #include "chrome/browser/extensions/chrome_extension_cookies.h"
  #include "extensions/browser/api/web_request/web_request_api.h"
-@@ -1439,7 +1440,7 @@ void ChromeContentBrowserClient::RegisterLocalStatePrefs(
+@@ -1421,7 +1422,7 @@ void ChromeContentBrowserClient::RegisterLocalStatePrefs(
  void ChromeContentBrowserClient::RegisterProfilePrefs(
      user_prefs::PrefRegistrySyncable* registry) {
    registry->RegisterBooleanPref(prefs::kDisable3DAPIs, false);
@@ -19,7 +19,7 @@ index 0ab10486a183c..e25fbac661e4d 100644
    // Register user prefs for mapping SitePerProcess and IsolateOrigins in
    // user policy in addition to the same named ones in Local State (which are
    // used for mapping the command-line flags).
-@@ -4975,6 +4976,43 @@ bool ChromeContentBrowserClient::
+@@ -4884,6 +4885,43 @@ bool ChromeContentBrowserClient::
               prefs.root_scrollbar_theme_color;
  }
  
@@ -63,7 +63,7 @@ index 0ab10486a183c..e25fbac661e4d 100644
  void ChromeContentBrowserClient::BrowserURLHandlerCreated(
      BrowserURLHandler* handler) {
    // The group policy NTP URL handler must be registered before the other NTP
-@@ -4991,6 +5029,13 @@ void ChromeContentBrowserClient::BrowserURLHandlerCreated(
+@@ -4900,6 +4938,13 @@ void ChromeContentBrowserClient::BrowserURLHandlerCreated(
    handler->AddHandlerPair(&HandleChromeAboutAndChromeSyncRewrite,
                            BrowserURLHandler::null_handler());
  
@@ -77,7 +77,7 @@ index 0ab10486a183c..e25fbac661e4d 100644
  #if BUILDFLAG(IS_ANDROID)
    // Handler to rewrite chrome://newtab on Android.
    handler->AddHandlerPair(&chrome::android::HandleAndroidNativePageURL,
-@@ -7741,6 +7786,15 @@ content::ContentBrowserClient::PrivateNetworkRequestPolicyOverride
+@@ -7693,6 +7738,15 @@ content::ContentBrowserClient::PrivateNetworkRequestPolicyOverride
  ChromeContentBrowserClient::ShouldOverridePrivateNetworkRequestPolicy(
      content::BrowserContext* browser_context,
      const url::Origin& origin) {
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/BUILD.gn b/packages/browseros/chromium_patches/chrome/browser/extensions/BUILD.gn
index 8f89ddf67..f8d017054 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/BUILD.gn
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/BUILD.gn
@@ -1,8 +1,8 @@
 diff --git a/chrome/browser/extensions/BUILD.gn b/chrome/browser/extensions/BUILD.gn
-index a8e054baadb1f..870b10ddd4eaa 100644
+index 5d5af07b158c0..f32c7889de5be 100644
 --- a/chrome/browser/extensions/BUILD.gn
 +++ b/chrome/browser/extensions/BUILD.gn
-@@ -351,6 +351,12 @@ source_set("extensions") {
+@@ -357,6 +357,12 @@ source_set("extensions") {
      "external_install_manager.h",
      "external_install_manager_factory.cc",
      "external_install_manager_factory.h",
@@ -12,10 +12,10 @@ index a8e054baadb1f..870b10ddd4eaa 100644
 +    "//chrome/browser/browseros/extensions/browseros_extension_loader.h",
 +    "//chrome/browser/browseros/extensions/browseros_extension_maintainer.cc",
 +    "//chrome/browser/browseros/extensions/browseros_extension_maintainer.h",
-     "external_loader.cc",
-     "external_loader.h",
      "external_policy_loader.cc",
-@@ -677,6 +683,18 @@ source_set("extensions") {
+     "external_policy_loader.h",
+     "external_pref_loader.cc",
+@@ -690,6 +696,18 @@ source_set("extensions") {
        "api/automation_internal/chrome_automation_internal_api_delegate.h",
        "api/bookmark_manager_private/bookmark_manager_private_api.cc",
        "api/bookmark_manager_private/bookmark_manager_private_api.h",
@@ -32,9 +32,9 @@ index a8e054baadb1f..870b10ddd4eaa 100644
 +      "api/browser_os/browser_os_snapshot_processor.cc",
 +      "api/browser_os/browser_os_snapshot_processor.h",
        "api/chrome_device_permissions_prompt.h",
-       "api/developer_private/developer_private_event_router_desktop.cc",
-       "api/developer_private/developer_private_event_router_desktop.h",
-@@ -1006,6 +1024,8 @@ source_set("extensions") {
+       "api/enterprise_reporting_private/conversion_utils.cc",
+       "api/enterprise_reporting_private/conversion_utils.h",
+@@ -997,6 +1015,8 @@ source_set("extensions") {
        "//components/language/core/common",
        "//components/language/core/language_model",
        "//components/live_caption:constants",
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.cc b/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.cc
index 43c785029..ba3b981a3 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/extensions/api/browser_os/browser_os_api.cc b/chrome/browser/extensions/api/browser_os/browser_os_api.cc
 new file mode 100644
-index 0000000000000..c08b705ef6869
+index 0000000000000..832e8d5471a78
 --- /dev/null
 +++ b/chrome/browser/extensions/api/browser_os/browser_os_api.cc
-@@ -0,0 +1,1437 @@
+@@ -0,0 +1,1445 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -21,6 +21,7 @@ index 0000000000000..c08b705ef6869
 +#include <utility>
 +#include <vector>
 +
++#include "components/viz/common/frame_sinks/copy_output_result.h"
 +#include "base/functional/bind.h"
 +#include "base/threading/platform_thread.h"
 +#include "chrome/browser/browser_process.h"
@@ -148,9 +149,9 @@ index 0000000000000..c08b705ef6869
 +  }
 +
 +  // Bool attributes map
-+  if (node.bool_attributes && node.bool_attributes->Size() > 0) {
++  if (node.bool_attributes.Size() > 0) {
 +    base::Value::Dict attrs;
-+    node.bool_attributes->ForEach([&attrs](ax::mojom::BoolAttribute key, bool value) {
++    node.bool_attributes.ForEach([&attrs](ax::mojom::BoolAttribute key, bool value) {
 +      attrs.Set(ui::ToString(key), value);
 +    });
 +    dict.Set("boolAttributes", std::move(attrs));
@@ -982,17 +983,24 @@ index 0000000000000..c08b705ef6869
 +  view->CopyFromSurface(
 +      gfx::Rect(),  // Empty rect means copy entire surface
 +      target_size_,
++      base::TimeDelta(),  // No timeout
 +      base::BindOnce(&BrowserOSCaptureScreenshotFunction::OnScreenshotCaptured,
 +                     this));
 +}
 +
 +void BrowserOSCaptureScreenshotFunction::OnScreenshotCaptured(
-+    const SkBitmap& bitmap) {
++    const content::CopyFromSurfaceResult& result) {
 +  // Clean up the highlights immediately after capture (only if we added them)
 +  if (show_highlights_ && web_contents_) {
 +    RemoveHighlights(web_contents_.get());
 +  }
-+  
++
++  if (!result.has_value()) {
++    Respond(Error("Failed to capture screenshot"));
++    return;
++  }
++
++  const SkBitmap& bitmap = result->bitmap;
 +  if (bitmap.empty()) {
 +    Respond(Error("Failed to capture screenshot"));
 +    return;
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.h b/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.h
index 53c5e7725..6a4cfaf75 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.h
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/api/browser_os/browser_os_api.h
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/extensions/api/browser_os/browser_os_api.h b/chrome/browser/extensions/api/browser_os/browser_os_api.h
 new file mode 100644
-index 0000000000000..2e2f5f0253f86
+index 0000000000000..53ece24723da0
 --- /dev/null
 +++ b/chrome/browser/extensions/api/browser_os/browser_os_api.h
-@@ -0,0 +1,369 @@
+@@ -0,0 +1,371 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -18,6 +18,8 @@ index 0000000000000..2e2f5f0253f86
 +#include "chrome/browser/extensions/api/browser_os/browser_os_api_utils.h"
 +#include "chrome/browser/extensions/api/browser_os/browser_os_content_processor.h"
 +#include "chrome/browser/extensions/api/browser_os/browser_os_snapshot_processor.h"
++#include "components/viz/common/frame_sinks/copy_output_result.h"
++#include "content/public/browser/render_widget_host_view.h"
 +#include "extensions/browser/extension_function.h"
 +#include "third_party/skia/include/core/SkBitmap.h"
 +#include "ui/shell_dialogs/select_file_dialog.h"
@@ -198,7 +200,7 @@ index 0000000000000..2e2f5f0253f86
 + private:
 +  void DrawHighlightsAndCapture();
 +  void CaptureScreenshotNow();
-+  void OnScreenshotCaptured(const SkBitmap& bitmap);
++  void OnScreenshotCaptured(const content::CopyFromSurfaceResult& result);
 +  
 +  // Store web contents and tab id for highlight operations
 +  base::WeakPtr<content::WebContents> web_contents_;
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/api/side_panel/side_panel_service.cc b/packages/browseros/chromium_patches/chrome/browser/extensions/api/side_panel/side_panel_service.cc
index 41341ae01..099437b84 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/api/side_panel/side_panel_service.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/api/side_panel/side_panel_service.cc
@@ -1,19 +1,20 @@
 diff --git a/chrome/browser/extensions/api/side_panel/side_panel_service.cc b/chrome/browser/extensions/api/side_panel/side_panel_service.cc
-index 0582cf9b5141a..d3ec91af0f140 100644
+index b4e8c1ce7316c..c6ba8b2fc1ca6 100644
 --- a/chrome/browser/extensions/api/side_panel/side_panel_service.cc
 +++ b/chrome/browser/extensions/api/side_panel/side_panel_service.cc
-@@ -8,8 +8,10 @@
+@@ -8,9 +8,11 @@
  #include <memory>
  #include <optional>
  
 +#include "base/logging.h"
  #include "base/no_destructor.h"
  #include "base/strings/stringprintf.h"
+ #include "base/strings/to_string.h"
 +#include "chrome/browser/browseros/core/browseros_constants.h"
  #include "chrome/browser/extensions/extension_tab_util.h"
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
-@@ -464,6 +466,139 @@ void SidePanelService::OnExtensionUninstalled(
+@@ -471,6 +473,139 @@ void SidePanelService::OnExtensionUninstalled(
    RemoveExtensionOptions(extension->id());
  }
  
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc b/packages/browseros/chromium_patches/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
index b7a277a74..991f6b4b1 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc b/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
-index f64f81b90b4fb..73c22ae9e77f8 100644
+index a251aaaa53378..25b5989cedf15 100644
 --- a/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
 +++ b/chrome/browser/extensions/chrome_extensions_browser_api_provider.cc
 @@ -4,6 +4,7 @@
@@ -7,14 +7,14 @@ index f64f81b90b4fb..73c22ae9e77f8 100644
  #include "chrome/browser/extensions/chrome_extensions_browser_api_provider.h"
  
 +#include "chrome/browser/extensions/api/browser_os/browser_os_api.h"
- #include "chrome/browser/extensions/api/commands/commands.h"
  #include "chrome/browser/extensions/api/generated_api_registration.h"
  #include "extensions/browser/extension_function_registry.h"
-@@ -23,6 +24,14 @@ void ChromeExtensionsBrowserAPIProvider::RegisterExtensionFunctions(
-   // Commands
-   registry->RegisterFunction<GetAllCommandsFunction>();
+ #include "extensions/buildflags/buildflags.h"
+@@ -19,6 +20,14 @@ ChromeExtensionsBrowserAPIProvider::~ChromeExtensionsBrowserAPIProvider() =
  
-+  // Browser OS API
+ void ChromeExtensionsBrowserAPIProvider::RegisterExtensionFunctions(
+     ExtensionFunctionRegistry* registry) {
++  // BrowserOS API
 +  registry->RegisterFunction<api::BrowserOSGetAccessibilityTreeFunction>();
 +  registry->RegisterFunction<api::BrowserOSGetInteractiveSnapshotFunction>();
 +  registry->RegisterFunction<api::BrowserOSClickFunction>();
diff --git a/packages/browseros/chromium_patches/chrome/browser/extensions/extension_context_menu_model.cc b/packages/browseros/chromium_patches/chrome/browser/extensions/extension_context_menu_model.cc
index 44dc2fe54..e7a64f094 100644
--- a/packages/browseros/chromium_patches/chrome/browser/extensions/extension_context_menu_model.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/extensions/extension_context_menu_model.cc
@@ -1,16 +1,16 @@
 diff --git a/chrome/browser/extensions/extension_context_menu_model.cc b/chrome/browser/extensions/extension_context_menu_model.cc
-index 39b916751757d..25b504181aeb6 100644
+index 7d8d30399b256..bd3356e448d51 100644
 --- a/chrome/browser/extensions/extension_context_menu_model.cc
 +++ b/chrome/browser/extensions/extension_context_menu_model.cc
-@@ -7,6 +7,7 @@
+@@ -6,6 +6,7 @@
+ 
  #include <memory>
  
- #include "base/containers/contains.h"
 +#include "chrome/browser/browseros/core/browseros_constants.h"
  #include "base/feature_list.h"
  #include "base/functional/bind.h"
  #include "base/metrics/histogram_macros.h"
-@@ -800,7 +801,8 @@ void ExtensionContextMenuModel::InitMenuWithFeature(
+@@ -806,7 +807,8 @@ void ExtensionContextMenuModel::InitMenuWithFeature(
  
    // Controls section.
    bool has_options_page = OptionsPageInfo::HasOptionsPage(extension);
diff --git a/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.cc b/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.cc
deleted file mode 100644
index 0c31890e5..000000000
--- a/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
-index f9088ac701027..f3f892d69791b 100644
---- a/chrome/browser/flag_descriptions.cc
-+++ b/chrome/browser/flag_descriptions.cc
-@@ -270,6 +270,19 @@ const char kBookmarksTreeViewName[] = "Top Chrome Bookmarks Tree View";
- const char kBookmarksTreeViewDescription[] =
-     "Show the bookmarks side panel in a tree view while in compact mode.";
- 
-+const char kBrowserOsAlphaFeaturesName[] = "BrowserOS Alpha Features";
-+const char kBrowserOsAlphaFeaturesDescription[] =
-+    "Enables BrowserOS alpha features.";
-+
-+const char kBrowserOsClawdbotName[] = "BrowserOS Clawdbot";
-+const char kBrowserOsClawdbotDescription[] =
-+    "Enables Clawdbot Browser Relay extension.";
-+
-+const char kBrowserOsKeyboardShortcutsName[] = "BrowserOS Keyboard Shortcuts";
-+const char kBrowserOsKeyboardShortcutsDescription[] =
-+    "Enables BrowserOS keyboard shortcuts (Cmd+Shift+K, Cmd+Shift+L, Option+A). "
-+    "Disable if these conflict with your keyboard layout.";
-+
- const char kBrowsingHistoryActorIntegrationM1Name[] =
-     "Browsing History Actor Integration M1";
- const char kBrowsingHistoryActorIntegrationM1Description[] =
diff --git a/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.h b/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.h
index 0f5f33c6c..22ae85b70 100644
--- a/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.h
+++ b/packages/browseros/chromium_patches/chrome/browser/flag_descriptions.h
@@ -1,20 +1,27 @@
 diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
-index fea522351cd1b..cc466bdbf03a3 100644
+index d73e9a053eb63..e22ef4d7024af 100644
 --- a/chrome/browser/flag_descriptions.h
 +++ b/chrome/browser/flag_descriptions.h
-@@ -188,6 +188,15 @@ extern const char kByDateHistoryInSidePanelDescription[];
- extern const char kBookmarksTreeViewName[];
- extern const char kBookmarksTreeViewDescription[];
+@@ -284,6 +284,22 @@ inline constexpr char kBookmarksTreeViewName[] =
+ inline constexpr char kBookmarksTreeViewDescription[] =
+     "Show the bookmarks side panel in a tree view while in compact mode.";
  
-+extern const char kBrowserOsAlphaFeaturesName[];
-+extern const char kBrowserOsAlphaFeaturesDescription[];
++// BrowserOS: feature flags
++inline constexpr char kBrowserOsAlphaFeaturesName[] =
++    "BrowserOS Alpha Features";
++inline constexpr char kBrowserOsAlphaFeaturesDescription[] =
++    "Enables BrowserOS alpha features.";
 +
-+extern const char kBrowserOsClawdbotName[];
-+extern const char kBrowserOsClawdbotDescription[];
++inline constexpr char kBrowserOsClawdbotName[] = "BrowserOS Clawdbot";
++inline constexpr char kBrowserOsClawdbotDescription[] =
++    "Enables Clawdbot Browser Relay extension.";
 +
-+extern const char kBrowserOsKeyboardShortcutsName[];
-+extern const char kBrowserOsKeyboardShortcutsDescription[];
++inline constexpr char kBrowserOsKeyboardShortcutsName[] =
++    "BrowserOS Keyboard Shortcuts";
++inline constexpr char kBrowserOsKeyboardShortcutsDescription[] =
++    "Enables BrowserOS keyboard shortcuts (Cmd+Shift+K, Cmd+Shift+L, "
++    "Option+A). Disable if these conflict with your keyboard layout.";
 +
- extern const char kBrowsingHistoryActorIntegrationM1Name[];
- extern const char kBrowsingHistoryActorIntegrationM1Description[];
- #endif
+ inline constexpr char kBrowsingHistoryActorIntegrationM1Name[] =
+     "Browsing History Actor Integration M1";
+ inline constexpr char kBrowsingHistoryActorIntegrationM1Description[] =
diff --git a/packages/browseros/chromium_patches/chrome/browser/importer/profile_writer.cc b/packages/browseros/chromium_patches/chrome/browser/importer/profile_writer.cc
index c1d6a7cae..34a7e2fa8 100644
--- a/packages/browseros/chromium_patches/chrome/browser/importer/profile_writer.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/importer/profile_writer.cc
@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/importer/profile_writer.cc b/chrome/browser/importer/profile_writer.cc
-index 6edb974687c07..738d8ca61a9b4 100644
+index 08859f9d1fa91..3f542543e6437 100644
 --- a/chrome/browser/importer/profile_writer.cc
 +++ b/chrome/browser/importer/profile_writer.cc
 @@ -11,6 +11,7 @@
@@ -10,7 +10,7 @@ index 6edb974687c07..738d8ca61a9b4 100644
  #include "base/strings/string_number_conversions.h"
  #include "base/strings/string_util.h"
  #include "base/strings/utf_string_conversions.h"
-@@ -36,7 +37,25 @@
+@@ -36,7 +37,24 @@
  #include "components/prefs/pref_service.h"
  #include "components/search_engines/template_url.h"
  #include "components/search_engines/template_url_service.h"
@@ -25,7 +25,6 @@ index 6edb974687c07..738d8ca61a9b4 100644
 +#include "extensions/browser/extension_system.h"
 +#include "extensions/common/extension.h"
 +#include "chrome/browser/extensions/webstore_installer.h"
-+#include "chrome/browser/extensions/install_approval.h"
 +#include "extensions/browser/extension_registry.h"
 +#include "chrome/browser/extensions/extension_install_prompt.h"
 +#include "chrome/browser/extensions/webstore_install_with_prompt.h"
@@ -36,7 +35,7 @@ index 6edb974687c07..738d8ca61a9b4 100644
  
  using bookmarks::BookmarkModel;
  using bookmarks::BookmarkNode;
-@@ -75,6 +94,22 @@ void ShowBookmarkBar(Profile* profile) {
+@@ -75,6 +93,22 @@ void ShowBookmarkBar(Profile* profile) {
    profile->GetPrefs()->SetBoolean(bookmarks::prefs::kShowBookmarkBar, true);
  }
  
@@ -59,7 +58,7 @@ index 6edb974687c07..738d8ca61a9b4 100644
  }  // namespace
  
  ProfileWriter::ProfileWriter(Profile* profile) : profile_(profile) {}
-@@ -99,6 +134,73 @@ void ProfileWriter::AddPasswordForm(
+@@ -99,6 +133,73 @@ void ProfileWriter::AddPasswordForm(
    }
  }
  
@@ -133,7 +132,7 @@ index 6edb974687c07..738d8ca61a9b4 100644
  void ProfileWriter::AddHistoryPage(const history::URLRows& page,
                                     history::VisitSource visit_source) {
    if (!page.empty()) {
-@@ -338,3 +440,119 @@ void ProfileWriter::AddAutocompleteFormDataEntries(
+@@ -338,3 +439,119 @@ void ProfileWriter::AddAutocompleteFormDataEntries(
  }
  
  ProfileWriter::~ProfileWriter() = default;
diff --git a/packages/browseros/chromium_patches/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc b/packages/browseros/chromium_patches/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
index 558930a45..5ccc73f36 100644
--- a/packages/browseros/chromium_patches/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
@@ -1,17 +1,18 @@
 diff --git a/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc b/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
-index b4ff6805bf506..fdce0d4e90463 100644
+index cb73087d9476d..14a8d978660dc 100644
 --- a/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
 +++ b/chrome/browser/sync/prefs/chrome_syncable_prefs_database.cc
-@@ -402,6 +402,8 @@ enum {
-   kDesktopToiOSLensPromoLastImpressionTimestamp = 100335,
-   kDesktopToiOSLensPromoImpressionsCounter = 100336,
-   kDesktopToiOSLensPromoOptOut = 100337,
-+  kPinnedThirdPartyLlmMigrationComplete = 100338,
-+  kPinnedClashOfGptsMigrationComplete = 100339,
+@@ -436,6 +436,9 @@ enum {
+   kPinContextualTaskButton = 100369,
+   kAccessibilityReadAnythingOmniboxChipIgnoredCount = 100370,
+   kAccessibilityReadAnythingLineFocus = 100371,
++  // BrowserOS: sync pref IDs
++  kPinnedThirdPartyLlmMigrationComplete = 100372,
++  kPinnedClashOfGptsMigrationComplete = 100373,
    // See components/sync_preferences/README.md about adding new entries here.
    // vvvvv IMPORTANT! vvvvv
    // Note to the reviewer: IT IS YOUR RESPONSIBILITY to ensure that new syncable
-@@ -590,6 +592,14 @@ constexpr auto kChromeSyncablePrefsAllowlist = base::MakeFixedFlatMap<
+@@ -636,6 +639,14 @@ constexpr auto kChromeSyncablePrefsAllowlist = base::MakeFixedFlatMap<
       {syncable_prefs_ids::kVerticalTabsEnabled, syncer::PREFERENCES,
        sync_preferences::PrefSensitivity::kNone,
        sync_preferences::MergeBehavior::kNone}},
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/BUILD.gn b/packages/browseros/chromium_patches/chrome/browser/ui/BUILD.gn
index 15028b6bb..994184796 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/BUILD.gn
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/BUILD.gn
@@ -1,18 +1,18 @@
 diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
-index f4531197ae5e1..027e77f1536c6 100644
+index 2ec7c847678a0..66767940651d2 100644
 --- a/chrome/browser/ui/BUILD.gn
 +++ b/chrome/browser/ui/BUILD.gn
-@@ -1275,6 +1275,8 @@ static_library("ui") {
-       "webui/settings/reset_settings_handler.h",
-       "webui/settings/search_engines_handler.cc",
+@@ -1297,6 +1297,8 @@ static_library("ui") {
        "webui/settings/search_engines_handler.h",
+       "webui/settings/security_settings_provider.cc",
+       "webui/settings/security_settings_provider.h",
 +      "webui/settings/browseros_metrics_handler.cc",
 +      "webui/settings/browseros_metrics_handler.h",
        "webui/settings/settings_clear_browsing_data_handler.cc",
        "webui/settings/settings_clear_browsing_data_handler.h",
        "webui/settings/settings_localized_strings_privacy_sandbox_provider.cc",
-@@ -3168,6 +3170,8 @@ static_library("ui") {
-       "views/frame/immersive_mode_controller_mac.mm",
+@@ -3225,6 +3227,8 @@ static_library("ui") {
+       "views/frame/immersive_mode_overlay_views_mac.mm",
        "views/tab_contents/chrome_web_contents_view_delegate_views_mac.h",
        "views/tab_contents/chrome_web_contents_view_delegate_views_mac.mm",
 +      "webui/help/sparkle_version_updater_mac.h",
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/browser_actions.cc b/packages/browseros/chromium_patches/chrome/browser/ui/browser_actions.cc
index c40c6e519..f920cbae5 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/browser_actions.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/browser_actions.cc
@@ -1,16 +1,16 @@
 diff --git a/chrome/browser/ui/browser_actions.cc b/chrome/browser/ui/browser_actions.cc
-index fb3dba200be8c..9b7941ff32407 100644
+index 96ccc8d0a6acc..9c446a5e041a9 100644
 --- a/chrome/browser/ui/browser_actions.cc
 +++ b/chrome/browser/ui/browser_actions.cc
-@@ -12,6 +12,7 @@
- #include "base/check_op.h"
+@@ -14,6 +14,7 @@
  #include "base/functional/bind.h"
  #include "base/functional/callback_helpers.h"
+ #include "chrome/app/chrome_command_ids.h"
 +#include "chrome/grit/theme_resources.h"
  #include "chrome/app/vector_icons/vector_icons.h"
+ #include "chrome/browser/contextual_tasks/contextual_tasks_side_panel_coordinator.h"
  #include "chrome/browser/devtools/devtools_window.h"
- #include "chrome/browser/prefs/incognito_mode_prefs.h"
-@@ -20,6 +21,13 @@
+@@ -23,6 +24,13 @@
  #include "chrome/browser/sharing_hub/sharing_hub_features.h"
  #include "chrome/browser/ui/actions/chrome_action_id.h"
  #include "chrome/browser/ui/actions/chrome_actions.h"
@@ -23,8 +23,8 @@ index fb3dba200be8c..9b7941ff32407 100644
 +#include "extensions/browser/extension_registry.h"
  #include "chrome/browser/ui/autofill/address_bubbles_icon_controller.h"
  #include "chrome/browser/ui/autofill/autofill_bubble_base.h"
- #include "chrome/browser/ui/autofill/payments/mandatory_reauth_bubble_controller_impl.h"
-@@ -253,6 +261,110 @@ void BrowserActions::InitializeBrowserActions() {
+ #include "chrome/browser/ui/autofill/payments/filled_card_information_bubble_controller_impl.h"
+@@ -272,6 +280,110 @@ void BrowserActions::InitializeBrowserActions() {
              .Build());
    }
  
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/browser_commands.cc b/packages/browseros/chromium_patches/chrome/browser/ui/browser_commands.cc
index 4d69f96bb..7f58c1efa 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/browser_commands.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/browser_commands.cc
@@ -1,8 +1,8 @@
 diff --git a/chrome/browser/ui/browser_commands.cc b/chrome/browser/ui/browser_commands.cc
-index 94593b999f490..d7f12d90b1577 100644
+index 43e2b81f9903f..9944e94ba22ef 100644
 --- a/chrome/browser/ui/browser_commands.cc
 +++ b/chrome/browser/ui/browser_commands.cc
-@@ -121,6 +121,7 @@
+@@ -122,6 +122,7 @@
  #include "chrome/browser/web_applications/web_app_helpers.h"
  #include "chrome/browser/web_applications/web_app_provider.h"
  #include "chrome/browser/web_applications/web_app_registrar.h"
@@ -10,7 +10,7 @@ index 94593b999f490..d7f12d90b1577 100644
  #include "chrome/common/chrome_features.h"
  #include "chrome/common/content_restriction.h"
  #include "chrome/common/pref_names.h"
-@@ -2392,7 +2393,20 @@ bool IsDebuggerAttachedToCurrentTab(Browser* browser) {
+@@ -2484,7 +2485,20 @@ bool IsDebuggerAttachedToCurrentTab(Browser* browser) {
  
  void CopyURL(BrowserWindowInterface* bwi, content::WebContents* web_contents) {
    ui::ScopedClipboardWriter scw(ui::ClipboardBuffer::kCopyPaste);
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/browser_ui_prefs.cc b/packages/browseros/chromium_patches/chrome/browser/ui/browser_ui_prefs.cc
index a25705c0d..fa0afbd1b 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/browser_ui_prefs.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/browser_ui_prefs.cc
@@ -1,8 +1,8 @@
 diff --git a/chrome/browser/ui/browser_ui_prefs.cc b/chrome/browser/ui/browser_ui_prefs.cc
-index 7a2f76324af50..d87b0e71d9a98 100644
+index e94568b1c7542..25e7e791009a0 100644
 --- a/chrome/browser/ui/browser_ui_prefs.cc
 +++ b/chrome/browser/ui/browser_ui_prefs.cc
-@@ -65,7 +65,7 @@ void RegisterBrowserPrefs(PrefRegistrySimple* registry) {
+@@ -68,7 +68,7 @@ void RegisterBrowserPrefs(PrefRegistrySimple* registry) {
  
    registry->RegisterBooleanPref(prefs::kHoverCardImagesEnabled, true);
  
@@ -11,7 +11,7 @@ index 7a2f76324af50..d87b0e71d9a98 100644
  
  #if defined(USE_AURA)
    registry->RegisterBooleanPref(prefs::kOverscrollHistoryNavigationEnabled,
-@@ -109,7 +109,7 @@ void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
+@@ -112,7 +112,7 @@ void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
  
    registry->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, true,
                                  pref_registration_flags);
@@ -20,11 +20,12 @@ index 7a2f76324af50..d87b0e71d9a98 100644
                                  pref_registration_flags);
    registry->RegisterBooleanPref(prefs::kSplitViewDragAndDropEnabled, true,
                                  pref_registration_flags);
-@@ -117,7 +117,7 @@ void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
-   registry->RegisterBooleanPref(prefs::kShowForwardButton, true,
+@@ -121,7 +121,8 @@ void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
+                                 pref_registration_flags);
+   registry->RegisterBooleanPref(prefs::kPinContextualTaskButton, true,
                                  pref_registration_flags);
- 
 -  registry->RegisterBooleanPref(prefs::kPinSplitTabButton, false,
++  // BrowserOS: default split tab button to pinned
 +  registry->RegisterBooleanPref(prefs::kPinSplitTabButton, true,
                                  pref_registration_flags);
  
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/internal/browser_window_features.cc b/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/internal/browser_window_features.cc
index aa5cf015e..8c4335fa8 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/internal/browser_window_features.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/internal/browser_window_features.cc
@@ -1,8 +1,8 @@
 diff --git a/chrome/browser/ui/browser_window/internal/browser_window_features.cc b/chrome/browser/ui/browser_window/internal/browser_window_features.cc
-index 8c4ecc7069f8f..ab415e928c23d 100644
+index cecb7ad2b1147..901f87635a63e 100644
 --- a/chrome/browser/ui/browser_window/internal/browser_window_features.cc
 +++ b/chrome/browser/ui/browser_window/internal/browser_window_features.cc
-@@ -88,12 +88,14 @@
+@@ -103,6 +103,7 @@
  #include "chrome/browser/ui/views/profiles/profile_menu_coordinator.h"
  #include "chrome/browser/ui/views/send_tab_to_self/send_tab_to_self_toolbar_bubble_controller.h"
  #include "chrome/browser/ui/views/side_panel/bookmarks/bookmarks_side_panel_coordinator.h"
@@ -10,14 +10,16 @@ index 8c4ecc7069f8f..ab415e928c23d 100644
  #include "chrome/browser/ui/views/side_panel/comments/comments_side_panel_coordinator.h"
  #include "chrome/browser/ui/views/side_panel/extensions/extension_side_panel_manager.h"
  #include "chrome/browser/ui/views/side_panel/history/history_side_panel_coordinator.h"
- #include "chrome/browser/ui/views/side_panel/history_clusters/history_clusters_side_panel_coordinator.h"
+@@ -110,6 +111,8 @@
  #include "chrome/browser/ui/views/side_panel/reading_list/reading_list_side_panel_coordinator.h"
  #include "chrome/browser/ui/views/side_panel/side_panel_coordinator.h"
+ #include "chrome/browser/ui/views/side_panel/side_panel_registry.h"
++#include "chrome/browser/ui/views/side_panel/clash_of_gpts/clash_of_gpts_coordinator.h"
 +#include "chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.h"
  #include "chrome/browser/ui/views/tabs/recent_activity_bubble_dialog_view.h"
  #include "chrome/browser/ui/views/tabs/tab_strip_action_container.h"
  #include "chrome/browser/ui/views/toolbar/chrome_labs/chrome_labs_coordinator.h"
-@@ -322,6 +324,12 @@ void BrowserWindowFeatures::Init(BrowserWindowInterface* browser) {
+@@ -381,6 +384,12 @@ void BrowserWindowFeatures::Init(BrowserWindowInterface* browser) {
    bookmarks_side_panel_coordinator_ =
        std::make_unique<BookmarksSidePanelCoordinator>();
  
@@ -30,15 +32,16 @@ index 8c4ecc7069f8f..ab415e928c23d 100644
    signin_view_controller_ = std::make_unique<SigninViewController>(
        browser, profile, tab_strip_model_);
  
-@@ -527,6 +535,11 @@ void BrowserWindowFeatures::InitPostWindowConstruction(Browser* browser) {
+@@ -603,6 +612,12 @@ void BrowserWindowFeatures::InitPostWindowConstruction(Browser* browser) {
    incognito_clear_browsing_data_dialog_coordinator_ =
        std::make_unique<IncognitoClearBrowsingDataDialogCoordinator>(profile);
  
++  // BrowserOS: Clash of GPTs coordinator
 +  if (base::FeatureList::IsEnabled(features::kClashOfGpts)) {
 +    clash_of_gpts_coordinator_ =
 +        std::make_unique<ClashOfGptsCoordinator>(browser);
 +  }
 +
-   if (auto* browser_view = BrowserView::GetBrowserViewForBrowser(browser)) {
+   if (browser_view) {
      color_provider_browser_helper_ =
          std::make_unique<ColorProviderBrowserHelper>(
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/public/browser_window_features.h b/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/public/browser_window_features.h
index 7ace04e51..45a9c6eb7 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/public/browser_window_features.h
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/browser_window/public/browser_window_features.h
@@ -1,16 +1,16 @@
 diff --git a/chrome/browser/ui/browser_window/public/browser_window_features.h b/chrome/browser/ui/browser_window/public/browser_window_features.h
-index 19048c9478592..cc3c846cac900 100644
+index f1fc1743c6b4b..1d36a9bde9e7c 100644
 --- a/chrome/browser/ui/browser_window/public/browser_window_features.h
 +++ b/chrome/browser/ui/browser_window/public/browser_window_features.h
-@@ -42,6 +42,7 @@ class BrowserUserEducationInterface;
+@@ -43,6 +43,7 @@ class BrowserUserEducationInterface;
  class BrowserView;
  class BrowserWindowInterface;
  class ChromeLabsCoordinator;
 +class ClashOfGptsCoordinator;
  class ColorProviderBrowserHelper;
+ class LocationBar;
  class CommentsSidePanelCoordinator;
- class ContentsBorderController;
-@@ -75,6 +76,7 @@ class TabSearchToolbarButtonController;
+@@ -86,6 +87,7 @@ class TabSearchToolbarButtonController;
  class TabListBridge;
  class TabStripModel;
  class TabStripServiceFeature;
@@ -18,8 +18,8 @@ index 19048c9478592..cc3c846cac900 100644
  class ToastController;
  class ToastService;
  class TranslateBubbleController;
-@@ -253,6 +255,14 @@ class BrowserWindowFeatures {
-     return comments_side_panel_coordinator_.get();
+@@ -277,6 +279,14 @@ class BrowserWindowFeatures {
+     return extension_installed_watcher_.get();
    }
  
 +  ThirdPartyLlmPanelCoordinator* third_party_llm_panel_coordinator() {
@@ -33,7 +33,7 @@ index 19048c9478592..cc3c846cac900 100644
  #if BUILDFLAG(ENABLE_GLIC)
    glic::GlicLegacySidePanelCoordinator* glic_side_panel_coordinator() {
      return glic_side_panel_coordinator_.get();
-@@ -546,6 +556,11 @@ class BrowserWindowFeatures {
+@@ -590,6 +600,11 @@ class BrowserWindowFeatures {
    std::unique_ptr<CommentsSidePanelCoordinator>
        comments_side_panel_coordinator_;
  
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/omnibox/chrome_omnibox_client.cc b/packages/browseros/chromium_patches/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
index 5724b809f..f45cdcde2 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
@@ -1,16 +1,16 @@
 diff --git a/chrome/browser/ui/omnibox/chrome_omnibox_client.cc b/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
-index 89857e5f1bc3e..476b0f0f6a9d2 100644
+index 37cb48b9b7c9f..90d2d430f41a5 100644
 --- a/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
 +++ b/chrome/browser/ui/omnibox/chrome_omnibox_client.cc
-@@ -115,6 +115,7 @@
+@@ -123,6 +123,7 @@
  #include "url/gurl.h"
  
  #if BUILDFLAG(ENABLE_EXTENSIONS)
 +#include "chrome/browser/browseros/core/browseros_constants.h"
- #include "chrome/browser/safe_browsing/extension_telemetry/extension_telemetry_service.h"
  #include "chrome/browser/ui/extensions/settings_api_bubble_helpers.h"
  #endif
-@@ -301,15 +302,50 @@ gfx::Image ChromeOmniboxClient::GetSizedIcon(const gfx::Image& icon) const {
+ 
+@@ -323,15 +324,50 @@ gfx::Image ChromeOmniboxClient::GetSizedIcon(const gfx::Image& icon) const {
  }
  
  std::u16string ChromeOmniboxClient::GetFormattedFullURL() const {
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/toolbar/app_menu_icon_controller.cc b/packages/browseros/chromium_patches/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
index cc198214e..e19941248 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
@@ -1,14 +1,15 @@
 diff --git a/chrome/browser/ui/toolbar/app_menu_icon_controller.cc b/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
-index 93b96091cf8b8..58820e2807d5c 100644
+index 62486948bce84..fbe9b650fd29e 100644
 --- a/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
 +++ b/chrome/browser/ui/toolbar/app_menu_icon_controller.cc
-@@ -45,8 +45,7 @@ AppMenuIconController::Severity SeverityFromUpgradeLevel(
+@@ -45,8 +45,8 @@ AppMenuIconController::Severity SeverityFromUpgradeLevel(
        case UpgradeDetector::UPGRADE_ANNOYANCE_NONE:
          break;
        case UpgradeDetector::UPGRADE_ANNOYANCE_VERY_LOW:
 -        // kVeryLow is meaningless for stable channels.
--        return AppMenuIconController::Severity::NONE;
-+        return AppMenuIconController::Severity::MEDIUM;
+-        return AppMenuIconController::Severity::kNone;
++        // BrowserOS: show update indicator sooner
++        return AppMenuIconController::Severity::kMedium;
        case UpgradeDetector::UPGRADE_ANNOYANCE_LOW:
-         return AppMenuIconController::Severity::LOW;
+         return AppMenuIconController::Severity::kLow;
        case UpgradeDetector::UPGRADE_ANNOYANCE_ELEVATED:
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.cc b/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.cc
index d78aaffbf..81cc5e2a9 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.cc
@@ -1,45 +1,10 @@
 diff --git a/chrome/browser/ui/ui_features.cc b/chrome/browser/ui/ui_features.cc
-index c03c8ac6f6e00..0c0b83dfe9fef 100644
+index 8e70b4d6c09a8..f63de4c04083c 100644
 --- a/chrome/browser/ui/ui_features.cc
 +++ b/chrome/browser/ui/ui_features.cc
-@@ -106,14 +106,14 @@ BASE_FEATURE(kReloadSelectionModel, base::FEATURE_DISABLED_BY_DEFAULT);
- // Enforces close tab hotkey to only close the active view of a split tab,
- // when it is the only tab in selection model.
- BASE_FEATURE(kCloseActiveTabInSplitViewViaHotkey,
--             base::FEATURE_DISABLED_BY_DEFAULT);
-+             base::FEATURE_ENABLED_BY_DEFAULT);
+@@ -115,6 +115,14 @@ BASE_FEATURE(kPopupBrowserUseNewLayout, base::FEATURE_ENABLED_BY_DEFAULT);
  
- #if BUILDFLAG(IS_MAC)
- // Add tab group colours when viewing tab groups using the top mac OS menu bar.
- BASE_FEATURE(kShowTabGroupsMacSystemMenu, base::FEATURE_DISABLED_BY_DEFAULT);
- #endif  // BUILDFLAG(IS_MAC)
- 
--BASE_FEATURE(kSideBySide, base::FEATURE_DISABLED_BY_DEFAULT);
-+BASE_FEATURE(kSideBySide, base::FEATURE_ENABLED_BY_DEFAULT);
- 
- // The delay before showing the drop target for the side-by-side drag-and-drop
- // entrypoint.
-@@ -242,7 +242,7 @@ BASE_FEATURE_PARAM(int,
- 
- // When enabled along with SideBySide flag, split tabs will be restored on
- // startup.
--BASE_FEATURE(kSideBySideSessionRestore, base::FEATURE_DISABLED_BY_DEFAULT);
-+BASE_FEATURE(kSideBySideSessionRestore, base::FEATURE_ENABLED_BY_DEFAULT);
- 
- bool IsRestoringSplitViewEnabled() {
-   return base::FeatureList::IsEnabled(features::kSideBySide) &&
-@@ -251,7 +251,7 @@ bool IsRestoringSplitViewEnabled() {
- 
- BASE_FEATURE(kSideBySideLinkMenuNewBadge, base::FEATURE_DISABLED_BY_DEFAULT);
- 
--BASE_FEATURE(kSideBySideKeyboardShortcut, base::FEATURE_DISABLED_BY_DEFAULT);
-+BASE_FEATURE(kSideBySideKeyboardShortcut, base::FEATURE_ENABLED_BY_DEFAULT);
- 
- bool IsSideBySideKeyboardShortcutEnabled() {
-   return base::FeatureList::IsEnabled(features::kSideBySide) &&
-@@ -260,6 +260,14 @@ bool IsSideBySideKeyboardShortcutEnabled() {
- 
- BASE_FEATURE(kSidePanelResizing, base::FEATURE_ENABLED_BY_DEFAULT);
+ BASE_FEATURE(kTabbedBrowserUseNewLayout, base::FEATURE_ENABLED_BY_DEFAULT);
  
 +BASE_FEATURE(kThirdPartyLlmPanel,
 +             "ThirdPartyLlmPanel",
@@ -51,4 +16,4 @@ index c03c8ac6f6e00..0c0b83dfe9fef 100644
 +
  BASE_FEATURE(kTabDuplicateMetrics, base::FEATURE_ENABLED_BY_DEFAULT);
  
- // Enables buttons when scrolling the tabstrip https://crbug.com/951078
+ // Enables tabs to be frozen when collapsed.
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.h b/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.h
index 111829954..b04a3261d 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.h
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/ui_features.h
@@ -1,13 +1,15 @@
 diff --git a/chrome/browser/ui/ui_features.h b/chrome/browser/ui/ui_features.h
-index 24bf81e4b6e3c..1056daae1f563 100644
+index 2bedb1e230459..f779499960910 100644
 --- a/chrome/browser/ui/ui_features.h
 +++ b/chrome/browser/ui/ui_features.h
-@@ -225,6 +225,8 @@ inline constexpr char kTabScrollingButtonPositionParameterName[] =
+@@ -161,6 +161,10 @@ BASE_DECLARE_FEATURE(kPopupBrowserUseNewLayout);
  
- BASE_DECLARE_FEATURE(kSidePanelResizing);
- BASE_DECLARE_FEATURE(kSidePanelSearchCompanion);
+ BASE_DECLARE_FEATURE(kTabbedBrowserUseNewLayout);
+ 
++// BrowserOS: feature declarations
 +BASE_DECLARE_FEATURE(kThirdPartyLlmPanel);
 +BASE_DECLARE_FEATURE(kClashOfGpts);
++
+ BASE_DECLARE_FEATURE(kTabDuplicateMetrics);
  
  BASE_DECLARE_FEATURE(kTabGroupsCollapseFreezing);
- BASE_DECLARE_FEATURE(kTabGroupHoverCards);
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/views/chrome_layout_provider.cc b/packages/browseros/chromium_patches/chrome/browser/ui/views/chrome_layout_provider.cc
index 79cad2bd3..cbc8c451c 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/views/chrome_layout_provider.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/views/chrome_layout_provider.cc
@@ -1,13 +1,16 @@
 diff --git a/chrome/browser/ui/views/chrome_layout_provider.cc b/chrome/browser/ui/views/chrome_layout_provider.cc
-index 0f1e5c46255a1..9d5c67a26e001 100644
+index 77be8f6e709d3..5f0dd9b1960d7 100644
 --- a/chrome/browser/ui/views/chrome_layout_provider.cc
 +++ b/chrome/browser/ui/views/chrome_layout_provider.cc
-@@ -160,7 +160,7 @@ int ChromeLayoutProvider::GetDistanceMetric(int metric) const {
-     case DISTANCE_INFOBAR_HEIGHT:
-       // Spec says height of button should be 36dp, vertical padding on both
+@@ -167,9 +167,10 @@ int ChromeLayoutProvider::GetDistanceMetric(int metric) const {
        // top and bottom should be 8dp.
--      return 36 + 2 * 8;
-+      return 36 + 2 * 3;
+       // The new refreshed button height is 20 + (2 * 6) = 32dp.
+       // Therefore, the total infobar height is 32dp + 2 * 12.
++      // BrowserOS: reduced padding for non-refresh infobars (2*3 instead of 2*8)
+       return base::FeatureList::IsEnabled(features::kInfobarRefresh)
+                  ? 32 + 2 * 12
+-                 : 36 + 2 * 8;
++                 : 36 + 2 * 3;
      case DISTANCE_PERMISSION_PROMPT_HORIZONTAL_ICON_LABEL_PADDING:
        return 8;
      case DISTANCE_RICH_HOVER_BUTTON_ICON_HORIZONTAL:
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
index 5a3fd5f59..cd86a17dc 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc b/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
-index ff61e95a7bba9..312c019f68442 100644
+index 539677d6bb9ac..bc32fcec8788c 100644
 --- a/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
 +++ b/chrome/browser/ui/views/side_panel/extensions/extension_side_panel_utils.cc
 @@ -4,6 +4,7 @@
@@ -10,8 +10,8 @@ index ff61e95a7bba9..312c019f68442 100644
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/ui/browser_window/public/browser_window_features.h"
  #include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
-@@ -216,4 +217,127 @@ void CloseContextualExtensionSidePanel(BrowserWindowInterface* browser_window,
-   }
+@@ -212,4 +213,127 @@ void CloseContextualExtensionSidePanel(BrowserWindowInterface* browser_window,
+       ExtensionSidePanelCoordinator::GetPanelType());
  }
  
 +bool IsContextualExtensionSidePanelOpen(BrowserWindowInterface* browser_window,
@@ -38,7 +38,7 @@ index ff61e95a7bba9..312c019f68442 100644
 +  // this extension's entry.
 +  if (is_active_tab) {
 +    SidePanelUI* side_panel_ui = browser_window->GetFeatures().side_panel_ui();
-+    bool is_showing = side_panel_ui->IsSidePanelShowing();
++    bool is_showing = side_panel_ui->IsSidePanelShowing(SidePanelEntry::PanelType::kContent);
 +    LOG(INFO) << "browseros: side_panel is_showing=" << is_showing;
 +    if (!is_showing) {
 +      return false;
@@ -84,7 +84,7 @@ index ff61e95a7bba9..312c019f68442 100644
 +
 +  // Check if this extension's contextual panel is currently showing.
 +  bool is_currently_open = false;
-+  if (is_active_tab && side_panel_ui->IsSidePanelShowing()) {
++  if (is_active_tab && side_panel_ui->IsSidePanelShowing(SidePanelEntry::PanelType::kContent)) {
 +    is_currently_open = IsKeyActiveInRegistry(contextual_registry, extension_key);
 +  }
 +
@@ -110,7 +110,7 @@ index ff61e95a7bba9..312c019f68442 100644
 +
 +  if (!should_open) {
 +    LOG(INFO) << "browseros: Closing contextual panel";
-+    side_panel_ui->Close();
++    side_panel_ui->Close(SidePanelEntry::PanelType::kContent);
 +    contextual_registry->ResetActiveEntryFor(SidePanelEntry::PanelType::kContent);
 +    return false;
 +  } else {
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.cc b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.cc
index 083f34080..a4de17d0c 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.cc
@@ -1,13 +1,16 @@
 diff --git a/chrome/browser/ui/views/side_panel/side_panel.cc b/chrome/browser/ui/views/side_panel/side_panel.cc
-index d98e373f9b359..14e1dbb3ca4d4 100644
+index 56a63f28ca526..773d4ff107c9a 100644
 --- a/chrome/browser/ui/views/side_panel/side_panel.cc
 +++ b/chrome/browser/ui/views/side_panel/side_panel.cc
-@@ -677,7 +677,7 @@ void SidePanel::UpdateVisibility(bool should_be_open, bool animate_transition) {
- 
- bool SidePanel::ShouldShowAnimation() const {
-   return lens::features::IsLensOverlayEnabled() &&
--         gfx::Animation::ShouldRenderRichAnimation() && !animations_disabled_;
-+         gfx::Animation::ShouldRenderRichAnimation() && !animations_disabled_ && animations_disabled_browseros_;
+@@ -879,8 +879,10 @@ double SidePanel::GetAnimationValueFor(
  }
  
- void SidePanel::AnnounceResize() {
+ bool SidePanel::ShouldShowAnimation() const {
++  // BrowserOS: animations_disabled_browseros_ used to control animation
+   bool should_show_animations =
+-      gfx::Animation::ShouldRenderRichAnimation() && !animations_disabled_;
++      gfx::Animation::ShouldRenderRichAnimation() && !animations_disabled_ &&
++      animations_disabled_browseros_;
+ #if BUILDFLAG(IS_WIN)
+   // Don't show open/close animations for the toolbar height panel on Windows
+   // due to jank. The "show from" animation should still run which is the only
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.h b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.h
index 7683afaf9..70f3b7b73 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.h
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/side_panel.h
@@ -1,13 +1,14 @@
 diff --git a/chrome/browser/ui/views/side_panel/side_panel.h b/chrome/browser/ui/views/side_panel/side_panel.h
-index 617d8674a4ead..e711565394814 100644
+index 340d36f59e278..32dac5e143fbd 100644
 --- a/chrome/browser/ui/views/side_panel/side_panel.h
 +++ b/chrome/browser/ui/views/side_panel/side_panel.h
-@@ -128,6 +128,8 @@ class SidePanel : public views::AccessiblePaneView,
+@@ -170,6 +170,9 @@ class SidePanel : public views::AccessiblePaneView,
  
    bool animations_disabled_ = false;
  
++  // BrowserOS: flag to control animations
 +  bool animations_disabled_browseros_ = true;
 +
-   // Animation controlling showing and hiding of the side panel.
-   gfx::SlideAnimation animation_{this};
- 
+   // Starting bounds for the side panel content if kOpenWithContentTransition
+   // animation is shown.
+   std::optional<gfx::Rect> content_starting_bounds_;
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc
index ade29e1cf..ba7d49bbf 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc b/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc
 new file mode 100644
-index 0000000000000..ea3e4207ee029
+index 0000000000000..d6a803c592c98
 --- /dev/null
 +++ b/chrome/browser/ui/views/side_panel/third_party_llm/third_party_llm_panel_coordinator.cc
-@@ -0,0 +1,1187 @@
+@@ -0,0 +1,1192 @@
 +// Copyright 2024 The Chromium Authors
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -66,6 +66,9 @@ index 0000000000000..ea3e4207ee029
 +#include "base/timer/timer.h"
 +#include "base/task/sequenced_task_runner.h"
 +#include "components/input/native_web_keyboard_event.h"
++#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
++#include "chrome/browser/ui/browser_window/public/browser_window_interface_iterator.h"
++#include "components/viz/common/frame_sinks/copy_output_result.h"
 +#include "content/public/browser/render_widget_host_view.h"
 +#include "third_party/skia/include/core/SkBitmap.h"
 +#include "ui/gfx/codec/png_codec.h"
@@ -640,14 +643,15 @@ index 0000000000000..ea3e4207ee029
 +  view->CopyFromSurface(
 +      gfx::Rect(),  // Empty rect = full visible surface
 +      gfx::Size(),  // Empty size = original size
++      base::TimeDelta(),  // No timeout
 +      base::BindOnce([](base::WeakPtr<ThirdPartyLlmPanelCoordinator> coordinator,
-+                        const SkBitmap& bitmap) {
++                        const content::CopyFromSurfaceResult& result) {
 +        if (!coordinator) {
 +          return;
 +        }
 +        gfx::Image image;
-+        if (!bitmap.drawsNothing()) {
-+          image = gfx::Image::CreateFrom1xBitmap(bitmap);
++        if (result.has_value() && !result->bitmap.drawsNothing()) {
++          image = gfx::Image::CreateFrom1xBitmap(result->bitmap);
 +        }
 +        coordinator->OnScreenshotCaptured(image);
 +      }, weak_factory_.GetWeakPtr()));
@@ -1175,9 +1179,10 @@ index 0000000000000..ea3e4207ee029
 +      OnOpenInNewTab();
 +      break;
 +    case IDC_CLASH_OF_GPTS:
-+      if (Browser* browser = BrowserList::GetInstance()->GetLastActive()) {
++      if (BrowserWindowInterface* window =
++              GetLastActiveBrowserWindowInterfaceWithAnyProfile()) {
 +        if (auto* coordinator =
-+                browser->browser_window_features()->clash_of_gpts_coordinator()) {
++                window->GetFeatures().clash_of_gpts_coordinator()) {
 +          coordinator->Show();
 +        }
 +      }
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/webui/help/version_updater_mac.mm b/packages/browseros/chromium_patches/chrome/browser/ui/webui/help/version_updater_mac.mm
index c544a1031..d5b7d91e7 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/webui/help/version_updater_mac.mm
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/webui/help/version_updater_mac.mm
@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/ui/webui/help/version_updater_mac.mm b/chrome/browser/ui/webui/help/version_updater_mac.mm
-index ad6be624e5cb0..a0d9043c06fa1 100644
+index d619a644cef14..a851e42d99acb 100644
 --- a/chrome/browser/ui/webui/help/version_updater_mac.mm
 +++ b/chrome/browser/ui/webui/help/version_updater_mac.mm
 @@ -6,6 +6,15 @@
@@ -18,7 +18,7 @@ index ad6be624e5cb0..a0d9043c06fa1 100644
  #include <algorithm>
  #include <memory>
  #include <string>
-@@ -78,6 +87,8 @@ void UpdateStatus(VersionUpdater::StatusCallback status_callback,
+@@ -77,6 +86,8 @@ void UpdateStatus(VersionUpdater::StatusCallback status_callback,
                     : VersionUpdater::Status::UPDATED;
        break;
      case updater::UpdateService::UpdateState::State::kUpdateError:
@@ -27,17 +27,7 @@ index ad6be624e5cb0..a0d9043c06fa1 100644
        switch (update_state.error_code) {
          case updater::GOOPDATE_E_APP_UPDATE_DISABLED_BY_POLICY:
            status = VersionUpdater::Status::DISABLED_BY_ADMIN;
-@@ -147,12 +158,27 @@ class VersionUpdaterMac : public VersionUpdater {
-             },
-             base::BindRepeating(&UpdateStatus, status_callback)));
-   }
--  void PromoteUpdater() override { SetupSystemUpdater(); }
-+  void PromoteUpdater() override {
-+    SetupSystemUpdater();
-+  }
- };
- 
- }  // namespace
+@@ -134,5 +145,18 @@ void CheckForUpdate(StatusCallback status_callback,
  
  std::unique_ptr<VersionUpdater> VersionUpdater::Create(
      content::WebContents* /* web_contents */) {
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom b/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
index 0ef81afdc..75cb2a230 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
@@ -1,11 +1,12 @@
 diff --git a/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom b/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
-index 8eec2ead88a8a..c873205ac549a 100644
+index dc2fed765187a..3ab37408a8488 100644
 --- a/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
 +++ b/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar.mojom
-@@ -33,6 +33,8 @@ enum ActionId {
-   kCopyLink,
+@@ -34,6 +34,9 @@ enum ActionId {
    kTabSearch,
    kSplitTab,
+   kContextualTasks,
++  // BrowserOS: custom action IDs
 +  kShowThirdPartyLlm,
 +  kShowClashOfGpts,
  };
diff --git a/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc b/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
index 2fbb2fb33..ff56524f2 100644
--- a/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
+++ b/packages/browseros/chromium_patches/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
@@ -1,11 +1,12 @@
 diff --git a/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc b/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
-index 52dddc0ddc518..5be29b2ed54dd 100644
+index 31b360347f2bc..1192c83265e9a 100644
 --- a/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
 +++ b/chrome/browser/ui/webui/side_panel/customize_chrome/customize_toolbar/customize_toolbar_handler.cc
-@@ -85,6 +85,10 @@ MojoActionForChromeAction(actions::ActionId action_id) {
-       return side_panel::customize_chrome::mojom::ActionId::kTabSearch;
-     case kActionSplitTab:
+@@ -92,6 +92,11 @@ MojoActionForChromeAction(actions::ActionId action_id) {
        return side_panel::customize_chrome::mojom::ActionId::kSplitTab;
+     case kActionSidePanelShowContextualTasks:
+       return side_panel::customize_chrome::mojom::ActionId::kContextualTasks;
++    // BrowserOS: custom toolbar actions
 +    case kActionSidePanelShowThirdPartyLlm:
 +      return side_panel::customize_chrome::mojom::ActionId::kShowThirdPartyLlm;
 +    case kActionSidePanelShowClashOfGpts:
@@ -13,10 +14,11 @@ index 52dddc0ddc518..5be29b2ed54dd 100644
      default:
        return std::nullopt;
    }
-@@ -143,6 +147,10 @@ std::optional<actions::ActionId> ChromeActionForMojoAction(
-       return kActionTabSearch;
-     case side_panel::customize_chrome::mojom::ActionId::kSplitTab:
+@@ -152,6 +157,11 @@ std::optional<actions::ActionId> ChromeActionForMojoAction(
        return kActionSplitTab;
+     case side_panel::customize_chrome::mojom::ActionId::kContextualTasks:
+       return kActionSidePanelShowContextualTasks;
++    // BrowserOS: custom toolbar actions
 +    case side_panel::customize_chrome::mojom::ActionId::kShowThirdPartyLlm:
 +      return kActionSidePanelShowThirdPartyLlm;
 +    case side_panel::customize_chrome::mojom::ActionId::kShowClashOfGpts:
@@ -24,7 +26,7 @@ index 52dddc0ddc518..5be29b2ed54dd 100644
      default:
        return std::nullopt;
    }
-@@ -290,6 +298,10 @@ void CustomizeToolbarHandler::ListActions(ListActionsCallback callback) {
+@@ -342,6 +352,10 @@ void CustomizeToolbarHandler::ListActions(ListActionsCallback callback) {
               side_panel::customize_chrome::mojom::CategoryId::kYourChrome);
    add_action(kActionSidePanelShowReadingList,
               side_panel::customize_chrome::mojom::CategoryId::kYourChrome);
diff --git a/packages/browseros/chromium_patches/chrome/common/pref_names.h b/packages/browseros/chromium_patches/chrome/common/pref_names.h
index 97e5de121..8db63a445 100644
--- a/packages/browseros/chromium_patches/chrome/common/pref_names.h
+++ b/packages/browseros/chromium_patches/chrome/common/pref_names.h
@@ -1,8 +1,8 @@
 diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
-index 1a4683393ff24..dc1e69f5fc57d 100644
+index 898e1c48db1e1..3f88b936ccd63 100644
 --- a/chrome/common/pref_names.h
 +++ b/chrome/common/pref_names.h
-@@ -1583,6 +1583,9 @@ inline constexpr char kImportDialogSavedPasswords[] =
+@@ -1594,6 +1594,9 @@ inline constexpr char kImportDialogSavedPasswords[] =
      "import_dialog_saved_passwords";
  inline constexpr char kImportDialogSearchEngine[] =
      "import_dialog_search_engine";
@@ -12,10 +12,11 @@ index 1a4683393ff24..dc1e69f5fc57d 100644
  
  // Profile avatar and name
  inline constexpr char kProfileAvatarIndex[] = "profile.avatar_index";
-@@ -4302,6 +4305,17 @@ inline constexpr char kNonMilestoneUpdateToastVersion[] =
-     "toast.non_milestone_update_toast_version";
- #endif  // !BUILDFLAG(IS_ANDROID)
+@@ -4336,6 +4339,18 @@ inline constexpr char kAndroidTipNotificationShownBottomOmnibox[] =
+ // LINT.ThenChange(//chrome/android/java/src/org/chromium/chrome/browser/notifications/tips/TipsUtils.java:TipsShownPrefs)
+ #endif  // BUILDFLAG(IS_ANDROID)
  
++// BrowserOS: metrics prefs
 +// String containing the stable client ID for BrowserOS metrics
 +inline constexpr char kBrowserOSMetricsClientId[] =
 +    "browseros.metrics_client_id";
diff --git a/packages/browseros/chromium_patches/chrome/install_static/chromium_install_modes.h b/packages/browseros/chromium_patches/chrome/install_static/chromium_install_modes.h
index 7c89209a0..0473bc29c 100644
--- a/packages/browseros/chromium_patches/chrome/install_static/chromium_install_modes.h
+++ b/packages/browseros/chromium_patches/chrome/install_static/chromium_install_modes.h
@@ -1,8 +1,8 @@
 diff --git a/chrome/install_static/chromium_install_modes.h b/chrome/install_static/chromium_install_modes.h
-index 7de32cf745755..18c95e7046ef1 100644
+index 0cf937413e08a..a61c438a77379 100644
 --- a/chrome/install_static/chromium_install_modes.h
 +++ b/chrome/install_static/chromium_install_modes.h
-@@ -33,47 +33,47 @@ inline constexpr auto kInstallModes = std::to_array<InstallConstants>({
+@@ -33,48 +33,49 @@ inline constexpr auto kInstallModes = std::to_array<InstallConstants>({
              L"",  // Empty install_suffix for the primary install mode.
          .logo_suffix = L"",  // No logo suffix for the primary install mode.
          .app_guid =
@@ -15,9 +15,11 @@ index 7de32cf745755..18c95e7046ef1 100644
 +        .base_app_id = L"BrowserOS",                // A distinct base_app_id.
 +        .browser_prog_id_prefix = L"BOSHTML",  // Browser ProgID prefix.
          .browser_prog_id_description =
--            L"Chromium HTML Document",         // Browser ProgID description.
+-            L"Chromium HTML Document",  // Browser ProgID description.
+-        .direct_launch_url_scheme = "chromium",
 -        .pdf_prog_id_prefix = L"ChromiumPDF",  // PDF ProgID prefix.
-+            L"BrowserOS HTML Document",         // Browser ProgID description.
++            L"BrowserOS HTML Document",  // Browser ProgID description.
++        .direct_launch_url_scheme = "browseros",
 +        .pdf_prog_id_prefix = L"BOSPDF",  // PDF ProgID prefix.
          .pdf_prog_id_description =
 -            L"Chromium PDF Document",  // PDF ProgID description.
@@ -40,12 +42,12 @@ index 7de32cf745755..18c95e7046ef1 100644
 -                           0x4D6B,
 -                           {0x8B, 0xFE, 0x83, 0xBF, 0x8C, 0xA1, 0xB1,
 -                            0xB0}},  // Elevator CLSID.
--        .elevator_iid = {0xb88c45b9,
--                         0x8825,
--                         0x4629,
--                         {0xb8, 0x3e, 0x77, 0xcc, 0x67, 0xd9, 0xce,
--                          0xed}},  // IElevator IID and TypeLib
--        // {B88C45B9-8825-4629-B83E-77CC67D9CEED}.
+-        .elevator_iid = {0xbb19a0e5,
+-                         0xc6,
+-                         0x4966,
+-                         {0x94, 0xb2, 0x5a, 0xfe, 0xc6, 0xfe, 0xd9,
+-                          0x3a}},  // IElevator IID and TypeLib
+-        // {BB19A0E5-00C6-4966-94B2-5AFEC6FED93A}.
 -        .tracing_service_clsid = {0x83f69367,
 -                                  0x442d,
 -                                  0x447f,
@@ -56,6 +58,7 @@ index 7de32cf745755..18c95e7046ef1 100644
 -                                0x4075,
 -                                {0x91, 0x74, 0x75, 0xd0, 0xb1, 0x99, 0xd3,
 -                                 0xcb}},  // ISystemTraceSessionChromium IID and
++        // BrowserOS: custom CLSIDs for Windows integration
 +        .toast_activator_clsid = {0xE76CCE76,
 +                                  0x27A7,
 +                                  0x46D3,
diff --git a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc
index e9e7c2032..40fe80f5e 100644
--- a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc
+++ b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc b/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc
 new file mode 100644
-index 0000000000000..6896bb7ab0f7c
+index 0000000000000..e631448aa5137
 --- /dev/null
 +++ b/chrome/utility/importer/browseros/chrome_bookmarks_importer.cc
-@@ -0,0 +1,249 @@
+@@ -0,0 +1,248 @@
 +// Copyright 2024 AKW Technology Inc
 +// Chrome bookmarks importer implementation
 +
@@ -151,8 +151,7 @@ index 0000000000000..6896bb7ab0f7c
 +        continue;
 +      }
 +
-+      std::vector<uint8_t> data;
-+      statement.ColumnBlobAsVector(1, &data);
++      std::vector<uint8_t> data = statement.ColumnBlobAsVector(1);
 +      if (data.empty()) {
 +        statement.Reset(true);
 +        continue;
@@ -193,7 +192,7 @@ index 0000000000000..6896bb7ab0f7c
 +  }
 +
 +  std::optional<base::Value> bookmarks_value =
-+      base::JSONReader::Read(bookmarks_content);
++      base::JSONReader::Read(bookmarks_content, base::JSON_PARSE_RFC);
 +  if (!bookmarks_value || !bookmarks_value->is_dict()) {
 +    LOG(WARNING) << "browseros: Failed to parse Bookmarks JSON";
 +    return result;
diff --git a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_cookie_importer.cc b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_cookie_importer.cc
index 3f380f9e7..9f286dd07 100644
--- a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_cookie_importer.cc
+++ b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_cookie_importer.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/utility/importer/browseros/chrome_cookie_importer.cc b/chrome/utility/importer/browseros/chrome_cookie_importer.cc
 new file mode 100644
-index 0000000000000..4497532338b3f
+index 0000000000000..da4ba9dd79e93
 --- /dev/null
 +++ b/chrome/utility/importer/browseros/chrome_cookie_importer.cc
-@@ -0,0 +1,229 @@
+@@ -0,0 +1,228 @@
 +// Copyright 2024 AKW Technology Inc
 +// Chrome cookie importer implementation
 +
@@ -184,8 +184,7 @@ index 0000000000000..4497532338b3f
 +
 +      // Get both plaintext and encrypted values
 +      std::string plaintext_value = statement.ColumnString(2);
-+      std::string encrypted_value;
-+      statement.ColumnBlobAsString(3, &encrypted_value);
++      std::string encrypted_value = statement.ColumnBlobAsString(3);
 +
 +      // Prefer encrypted_value if present, otherwise use plaintext
 +      if (!encrypted_value.empty()) {
diff --git a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_decryptor_win.cc b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_decryptor_win.cc
index 0cac94278..63b5bed4b 100644
--- a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_decryptor_win.cc
+++ b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_decryptor_win.cc
@@ -1,6 +1,6 @@
 diff --git a/chrome/utility/importer/browseros/chrome_decryptor_win.cc b/chrome/utility/importer/browseros/chrome_decryptor_win.cc
 new file mode 100644
-index 0000000000000..5853c63c5e2d4
+index 0000000000000..c56a27b698eda
 --- /dev/null
 +++ b/chrome/utility/importer/browseros/chrome_decryptor_win.cc
 @@ -0,0 +1,246 @@
@@ -53,7 +53,7 @@ index 0000000000000..5853c63c5e2d4
 +    return false;
 +  }
 +
-+  auto parsed = base::JSONReader::Read(json_content);
++  auto parsed = base::JSONReader::Read(json_content, base::JSON_PARSE_RFC);
 +  if (!parsed || !parsed->is_dict()) {
 +    LOG(WARNING) << "browseros: Failed to parse Local State JSON";
 +    return false;
diff --git a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_password_importer.cc b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_password_importer.cc
index 53de335ea..307984506 100644
--- a/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_password_importer.cc
+++ b/packages/browseros/chromium_patches/chrome/utility/importer/browseros/chrome_password_importer.cc
@@ -1,9 +1,9 @@
 diff --git a/chrome/utility/importer/browseros/chrome_password_importer.cc b/chrome/utility/importer/browseros/chrome_password_importer.cc
 new file mode 100644
-index 0000000000000..cbae752f359b5
+index 0000000000000..1a01e3951aa3f
 --- /dev/null
 +++ b/chrome/utility/importer/browseros/chrome_password_importer.cc
-@@ -0,0 +1,151 @@
+@@ -0,0 +1,150 @@
 +// Copyright 2024 AKW Technology Inc
 +// Chrome password importer implementation
 +
@@ -104,8 +104,7 @@ index 0000000000000..cbae752f359b5
 +      std::u16string password_element = statement.ColumnString16(4);
 +
 +      // password_value is a BLOB - encrypted
-+      std::string encrypted_password;
-+      statement.ColumnBlobAsString(5, &encrypted_password);
++      std::string encrypted_password = statement.ColumnBlobAsString(5);
 +
 +      std::string signon_realm = statement.ColumnString(6);
 +      bool blacklisted = statement.ColumnBool(7);
diff --git a/packages/browseros/chromium_patches/components/infobars/core/infobar_delegate.h b/packages/browseros/chromium_patches/components/infobars/core/infobar_delegate.h
index 058f00ba3..b7d4e7285 100644
--- a/packages/browseros/chromium_patches/components/infobars/core/infobar_delegate.h
+++ b/packages/browseros/chromium_patches/components/infobars/core/infobar_delegate.h
@@ -1,12 +1,13 @@
 diff --git a/components/infobars/core/infobar_delegate.h b/components/infobars/core/infobar_delegate.h
-index 20a8371d17c74..0351c5ad4b028 100644
+index 62247f8d82ca6..5bc23ffd73d95 100644
 --- a/components/infobars/core/infobar_delegate.h
 +++ b/components/infobars/core/infobar_delegate.h
-@@ -195,6 +195,7 @@ class InfoBarDelegate {
-     PIN_INFOBAR_DELEGATE = 127,
+@@ -212,6 +212,8 @@ class InfoBarDelegate {
      SESSION_RESTORE_INFOBAR_DELEGATE = 128,
      ROLL_BACK_MODE_B_INFOBAR_DELEGATE = 129,
-+    BROWSEROS_AGENT_INSTALLING_INFOBAR_DELEGATE = 130,
+     DEV_TOOLS_REMOTE_DEBUGGING_INFOBAR_DELEGATE = 130,
++    // BrowserOS: agent installation infobar
++    BROWSEROS_AGENT_INSTALLING_INFOBAR_DELEGATE = 131,
    };
    // LINT.ThenChange(//tools/metrics/histograms/metadata/browser/enums.xml:InfoBarIdentifier)
  
diff --git a/packages/browseros/chromium_patches/components/os_crypt/sync/keychain_password_mac.mm b/packages/browseros/chromium_patches/components/os_crypt/common/keychain_password_mac.mm
similarity index 55%
rename from packages/browseros/chromium_patches/components/os_crypt/sync/keychain_password_mac.mm
rename to packages/browseros/chromium_patches/components/os_crypt/common/keychain_password_mac.mm
index 5356ce112..8d8db4321 100644
--- a/packages/browseros/chromium_patches/components/os_crypt/sync/keychain_password_mac.mm
+++ b/packages/browseros/chromium_patches/components/os_crypt/common/keychain_password_mac.mm
@@ -1,13 +1,14 @@
-diff --git a/components/os_crypt/sync/keychain_password_mac.mm b/components/os_crypt/sync/keychain_password_mac.mm
-index 1d4c16a300227..af4b3c4c09eb9 100644
---- a/components/os_crypt/sync/keychain_password_mac.mm
-+++ b/components/os_crypt/sync/keychain_password_mac.mm
-@@ -35,8 +35,8 @@ namespace {
+diff --git a/components/os_crypt/common/keychain_password_mac.mm b/components/os_crypt/common/keychain_password_mac.mm
+index caa0e420956a3..d60a67a8bacb7 100644
+--- a/components/os_crypt/common/keychain_password_mac.mm
++++ b/components/os_crypt/common/keychain_password_mac.mm
+@@ -35,8 +35,9 @@
  const char kDefaultServiceName[] = "Chrome Safe Storage";
  const char kDefaultAccountName[] = "Chrome";
  #else
 -const char kDefaultServiceName[] = "Chromium Safe Storage";
 -const char kDefaultAccountName[] = "Chromium";
++// BrowserOS: custom keychain service name
 +const char kDefaultServiceName[] = "BrowserOS Safe Storage";
 +const char kDefaultAccountName[] = "BrowserOS";
  #endif
diff --git a/packages/browseros/chromium_patches/extensions/browser/extension_function_histogram_value.h b/packages/browseros/chromium_patches/extensions/browser/extension_function_histogram_value.h
index a1021d7ef..99ad31c40 100644
--- a/packages/browseros/chromium_patches/extensions/browser/extension_function_histogram_value.h
+++ b/packages/browseros/chromium_patches/extensions/browser/extension_function_histogram_value.h
@@ -1,36 +1,37 @@
 diff --git a/extensions/browser/extension_function_histogram_value.h b/extensions/browser/extension_function_histogram_value.h
-index 6d9bd29ae220f..f84c951ebeacb 100644
+index ef1e808e09269..0d8e46d362f80 100644
 --- a/extensions/browser/extension_function_histogram_value.h
 +++ b/extensions/browser/extension_function_histogram_value.h
-@@ -2011,6 +2011,31 @@ enum HistogramValue {
-   DEVELOPERPRIVATE_SHOWSITESETTINGS = 1948,
-   ACCESSIBILITY_PRIVATE_PROCESSPENDINGSPOKENFEEDBACKEVENT = 1949,
-   ACCESSIBILITY_PRIVATE_ENABLESPOKENFEEDBACKMV3KEYHANDLING = 1950,
-+  BROWSER_OS_GETACCESSIBILITYTREE = 1951,
-+  BROWSER_OS_GETINTERACTIVESNAPSHOT = 1952,
-+  BROWSER_OS_CLICK = 1953,
-+  BROWSER_OS_INPUTTEXT = 1954,
-+  BROWSER_OS_CLEAR = 1955,
-+  BROWSER_OS_GETPAGELOADSTATUS = 1956,
-+  BROWSER_OS_SCROLLUP = 1957,
-+  BROWSER_OS_SCROLLDOWN = 1958,
-+  BROWSER_OS_SCROLLTONODE = 1959,
-+  BROWSER_OS_SENDKEYS = 1960,
-+  BROWSER_OS_GETPAGESTRUCTURE = 1961,
-+  BROWSER_OS_CAPTURESCREENSHOT = 1962,
-+  BROWSER_OS_GETSNAPSHOT = 1963,
-+  BROWSER_OS_GETPREF = 1964,
-+  BROWSER_OS_SETPREF = 1965,
-+  BROWSER_OS_GETALLPREFS = 1966,
-+  BROWSER_OS_LOGMETRIC = 1967,
-+  BROWSER_OS_GETVERSIONNUMBER = 1968,
-+  BROWSER_OS_EXECUTEJAVASCRIPT = 1969,
-+  BROWSER_OS_CLICKCOORDINATES = 1970,
-+  BROWSER_OS_TYPEATCOORDINATES = 1971,
-+  SIDEPANEL_BROWSEROSTOGGLE = 1972,
-+  SIDEPANEL_BROWSEROSISOPEN = 1973,
-+  BROWSER_OS_GETBROWSEROSVERSIONNUMBER = 1974,
-+  BROWSER_OS_CHOOSEPATH = 1975,
+@@ -2017,6 +2017,32 @@ enum HistogramValue {
+   WEBSTOREPRIVATE_SHOULDSHOWENTERPRISEPROMOTIONBANNER = 1954,
+   WEBSTOREPRIVATE_LOGENTERPRISEPROMOSHOWN = 1955,
+   WEBSTOREPRIVATE_ONENTERPRISEPROMOCLICK = 1956,
++  // BrowserOS: extension function histogram values
++  BROWSER_OS_GETACCESSIBILITYTREE = 1957,
++  BROWSER_OS_GETINTERACTIVESNAPSHOT = 1958,
++  BROWSER_OS_CLICK = 1959,
++  BROWSER_OS_INPUTTEXT = 1960,
++  BROWSER_OS_CLEAR = 1961,
++  BROWSER_OS_GETPAGELOADSTATUS = 1962,
++  BROWSER_OS_SCROLLUP = 1963,
++  BROWSER_OS_SCROLLDOWN = 1964,
++  BROWSER_OS_SCROLLTONODE = 1965,
++  BROWSER_OS_SENDKEYS = 1966,
++  BROWSER_OS_GETPAGESTRUCTURE = 1967,
++  BROWSER_OS_CAPTURESCREENSHOT = 1968,
++  BROWSER_OS_GETSNAPSHOT = 1969,
++  BROWSER_OS_GETPREF = 1970,
++  BROWSER_OS_SETPREF = 1971,
++  BROWSER_OS_GETALLPREFS = 1972,
++  BROWSER_OS_LOGMETRIC = 1973,
++  BROWSER_OS_GETVERSIONNUMBER = 1974,
++  BROWSER_OS_EXECUTEJAVASCRIPT = 1975,
++  BROWSER_OS_CLICKCOORDINATES = 1976,
++  BROWSER_OS_TYPEATCOORDINATES = 1977,
++  SIDEPANEL_BROWSEROSTOGGLE = 1978,
++  SIDEPANEL_BROWSEROSISOPEN = 1979,
++  BROWSER_OS_GETBROWSEROSVERSIONNUMBER = 1980,
++  BROWSER_OS_CHOOSEPATH = 1981,
    // Last entry: Add new entries above, then run:
    // tools/metrics/histograms/update_extension_histograms.py
    ENUM_BOUNDARY
diff --git a/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/browser/enums.xml b/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/browser/enums.xml
index 3ecb9ced4..143d505cb 100644
--- a/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/browser/enums.xml
+++ b/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/browser/enums.xml
@@ -1,12 +1,12 @@
 diff --git a/tools/metrics/histograms/metadata/browser/enums.xml b/tools/metrics/histograms/metadata/browser/enums.xml
-index bc3f8f03d346c..c8d293bb0fd10 100644
+index 007aa3eb6038e..789d47a8811e5 100644
 --- a/tools/metrics/histograms/metadata/browser/enums.xml
 +++ b/tools/metrics/histograms/metadata/browser/enums.xml
-@@ -361,6 +361,7 @@ chromium-metrics-reviews@google.com.
-   <int value="127" label="PIN_TO_TASKBAR_INFOBAR_DELEGATE"/>
+@@ -363,6 +363,7 @@ chromium-metrics-reviews@google.com.
    <int value="128" label="SESSION_RESTORE_INFOBAR_DELEGATE"/>
    <int value="129" label="ROLL_BACK_MODE_B_INFOBAR_DELEGATE"/>
-+  <int value="130" label="BROWSEROS_AGENT_INSTALLING_INFOBAR_DELEGATE"/>
+   <int value="130" label="DEV_TOOLS_REMOTE_DEBUGGING_INFOBAR_DELEGATE"/>
++  <int value="131" label="BROWSEROS_AGENT_INSTALLING_INFOBAR_DELEGATE"/>
  </enum>
  
  <!-- LINT.ThenChange(//components/infobars/core/infobar_delegate.h:InfoBarIdentifier) -->
diff --git a/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/extensions/enums.xml b/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/extensions/enums.xml
index 9acc80786..a5fe96c77 100644
--- a/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/extensions/enums.xml
+++ b/packages/browseros/chromium_patches/tools/metrics/histograms/metadata/extensions/enums.xml
@@ -1,36 +1,36 @@
 diff --git a/tools/metrics/histograms/metadata/extensions/enums.xml b/tools/metrics/histograms/metadata/extensions/enums.xml
-index c36ba9e58148d..fbc5eefb3a231 100644
+index 6a374906f9f2e..4defc26e74df9 100644
 --- a/tools/metrics/histograms/metadata/extensions/enums.xml
 +++ b/tools/metrics/histograms/metadata/extensions/enums.xml
-@@ -2843,6 +2843,31 @@ Called by update_extension_histograms.py.-->
-       label="ACCESSIBILITY_PRIVATE_PROCESSPENDINGSPOKENFEEDBACKEVENT"/>
-   <int value="1950"
-       label="ACCESSIBILITY_PRIVATE_ENABLESPOKENFEEDBACKMV3KEYHANDLING"/>
-+  <int value="1951" label="BROWSER_OS_GETACCESSIBILITYTREE"/>
-+  <int value="1952" label="BROWSER_OS_GETINTERACTIVESNAPSHOT"/>
-+  <int value="1953" label="BROWSER_OS_CLICK"/>
-+  <int value="1954" label="BROWSER_OS_INPUTTEXT"/>
-+  <int value="1955" label="BROWSER_OS_CLEAR"/>
-+  <int value="1956" label="BROWSER_OS_GETPAGELOADSTATUS"/>
-+  <int value="1957" label="BROWSER_OS_SCROLLUP"/>
-+  <int value="1958" label="BROWSER_OS_SCROLLDOWN"/>
-+  <int value="1959" label="BROWSER_OS_SCROLLTONODE"/>
-+  <int value="1960" label="BROWSER_OS_SENDKEYS"/>
-+  <int value="1961" label="BROWSER_OS_GETPAGESTRUCTURE"/>
-+  <int value="1962" label="BROWSER_OS_CAPTURESCREENSHOT"/>
-+  <int value="1963" label="BROWSER_OS_GETSNAPSHOT"/>
-+  <int value="1964" label="BROWSER_OS_GETPREF"/>
-+  <int value="1965" label="BROWSER_OS_SETPREF"/>
-+  <int value="1966" label="BROWSER_OS_GETALLPREFS"/>
-+  <int value="1967" label="BROWSER_OS_LOGMETRIC"/>
-+  <int value="1968" label="BROWSER_OS_GETVERSIONNUMBER"/>
-+  <int value="1969" label="BROWSER_OS_EXECUTEJAVASCRIPT"/>
-+  <int value="1970" label="BROWSER_OS_CLICKCOORDINATES"/>
-+  <int value="1971" label="BROWSER_OS_TYPEATCOORDINATES"/>
-+  <int value="1972" label="SIDEPANEL_BROWSEROSTOGGLE"/>
-+  <int value="1973" label="SIDEPANEL_BROWSEROSISOPEN"/>
-+  <int value="1974" label="BROWSER_OS_GETBROWSEROSVERSIONNUMBER"/>
-+  <int value="1975" label="BROWSER_OS_CHOOSEPATH"/>
+@@ -2871,6 +2871,31 @@ Called by update_extension_histograms.py.-->
+       label="WEBSTOREPRIVATE_SHOULDSHOWENTERPRISEPROMOTIONBANNER"/>
+   <int value="1955" label="WEBSTOREPRIVATE_LOGENTERPRISEPROMOSHOWN"/>
+   <int value="1956" label="WEBSTOREPRIVATE_ONENTERPRISEPROMOCLICK"/>
++  <int value="1957" label="BROWSER_OS_GETACCESSIBILITYTREE"/>
++  <int value="1958" label="BROWSER_OS_GETINTERACTIVESNAPSHOT"/>
++  <int value="1959" label="BROWSER_OS_CLICK"/>
++  <int value="1960" label="BROWSER_OS_INPUTTEXT"/>
++  <int value="1961" label="BROWSER_OS_CLEAR"/>
++  <int value="1962" label="BROWSER_OS_GETPAGELOADSTATUS"/>
++  <int value="1963" label="BROWSER_OS_SCROLLUP"/>
++  <int value="1964" label="BROWSER_OS_SCROLLDOWN"/>
++  <int value="1965" label="BROWSER_OS_SCROLLTONODE"/>
++  <int value="1966" label="BROWSER_OS_SENDKEYS"/>
++  <int value="1967" label="BROWSER_OS_GETPAGESTRUCTURE"/>
++  <int value="1968" label="BROWSER_OS_CAPTURESCREENSHOT"/>
++  <int value="1969" label="BROWSER_OS_GETSNAPSHOT"/>
++  <int value="1970" label="BROWSER_OS_GETPREF"/>
++  <int value="1971" label="BROWSER_OS_SETPREF"/>
++  <int value="1972" label="BROWSER_OS_GETALLPREFS"/>
++  <int value="1973" label="BROWSER_OS_LOGMETRIC"/>
++  <int value="1974" label="BROWSER_OS_GETVERSIONNUMBER"/>
++  <int value="1975" label="BROWSER_OS_EXECUTEJAVASCRIPT"/>
++  <int value="1976" label="BROWSER_OS_CLICKCOORDINATES"/>
++  <int value="1977" label="BROWSER_OS_TYPEATCOORDINATES"/>
++  <int value="1978" label="SIDEPANEL_BROWSEROSTOGGLE"/>
++  <int value="1979" label="SIDEPANEL_BROWSEROSISOPEN"/>
++  <int value="1980" label="BROWSER_OS_GETBROWSEROSVERSIONNUMBER"/>
++  <int value="1981" label="BROWSER_OS_CHOOSEPATH"/>
  </enum>
  
  <!-- LINT.ThenChange(//extensions/browser/extension_function_histogram_value.h:HistogramValue) -->
diff --git a/packages/browseros/resources/BROWSEROS_VERSION b/packages/browseros/resources/BROWSEROS_VERSION
index 6e0716cfe..755e8e313 100644
--- a/packages/browseros/resources/BROWSEROS_VERSION
+++ b/packages/browseros/resources/BROWSEROS_VERSION
@@ -1,4 +1,4 @@
 BROWSEROS_MAJOR=0
-BROWSEROS_MINOR=39
+BROWSEROS_MINOR=40
 BROWSEROS_BUILD=0
-BROWSEROS_PATCH=3
+BROWSEROS_PATCH=0
diff --git a/packages/browseros/series_patches/series b/packages/browseros/series_patches/series
index 4384f7b67..bba13c737 100644
--- a/packages/browseros/series_patches/series
+++ b/packages/browseros/series_patches/series
@@ -11,4 +11,4 @@
 # Comments start with #
 # Inline comments: path/to/patch.patch # comment here
 
-ungoogle-chromium/extensions-manifestv2.patch
+# ungoogle-chromium/extensions-manifestv2.patch
diff --git a/packages/browseros/series_patches/series.windows b/packages/browseros/series_patches/series.windows
index 433e70307..f3a231358 100644
--- a/packages/browseros/series_patches/series.windows
+++ b/packages/browseros/series_patches/series.windows
@@ -3,8 +3,8 @@
 # These patches are applied only when building on Windows.
 # Paths are relative to the series_patches directory.
 
-windows/ungoogled-chromium/windows-disable-rcpy.patch
-windows/ungoogled-chromium/windows-fix-rc.patch
-windows/ungoogled-chromium/windows-fix-command-ids.patch
-windows/ungoogled-chromium/windows-disable-download-warning-prompt.patch
-windows/ungoogled-chromium/windows-fix-rc-terminating-error.patch
+# windows/ungoogled-chromium/windows-disable-rcpy.patch
+# windows/ungoogled-chromium/windows-fix-rc.patch
+# windows/ungoogled-chromium/windows-fix-command-ids.patch
+# windows/ungoogled-chromium/windows-disable-download-warning-prompt.patch
+# windows/ungoogled-chromium/windows-fix-rc-terminating-error.patch