diff --git a/tools/metrics/histograms/metadata/sql/histograms.xml b/tools/metrics/histograms/metadata/sql/histograms.xml
index 785239ad899c0..34ec7f41d2cfe 100644
--- a/tools/metrics/histograms/metadata/sql/histograms.xml
+++ b/tools/metrics/histograms/metadata/sql/histograms.xml
@@ -42,6 +42,7 @@ chromium-metrics-reviews@google.com.
   <variant name="DownloadRecord" summary="DownloadRecord"/>
   <variant name="FileIndexService" summary="FileIndexService"/>
   <variant name="FirefoxImporter" summary="FirefoxImporter"/>
+  <variant name="ChromeImporter" summary="ChromeImporter"/>
   <variant name="FirstPartySets" summary="FirstPartySets"/>
   <variant name="FSPContextDatabase" summary="FSPContextDatabase"/>
   <variant name="History" summary="History"/>
