diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index c5b65ea..2fe3c70 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -501,6 +501,9 @@
 extern const char kHarfbuzzRendertextName[];
 extern const char kHarfbuzzRendertextDescription[];
 
+extern const char kHorizontalTabSwitcherAndroidName[];
+extern const char kHorizontalTabSwitcherAndroidDescription[];
+
 extern const char kViewsCastDialogName[];
 extern const char kViewsCastDialogDescription[];