MD History: Add tooltip for history menu button

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

Index: chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
diff --git a/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc b/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
index 185bb9e3c9c067e73daf40672933d98cfc65f215..2f66fa5a698d9c61d44aaf5cc7a5671a19b967ce 100644
--- a/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
+++ b/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
@@ -72,6 +72,7 @@ void AddCommonStrings(content::WebUIDataSource* html_source, Profile* profile) {
       {"basicPageTitle", IDS_SETTINGS_BASIC},
       {"settings", IDS_SETTINGS_SETTINGS},
       {"restart", IDS_SETTINGS_RESTART},
+      {"menuButtonLabel", IDS_SETTINGS_MENU_BUTTON_LABEL},
   };
   AddLocalizedStringsBulk(html_source, localized_strings,
                           arraysize(localized_strings));