[MVTiles] Adding feature flag and string

Lands a feature flag for MV tiles on Android as well as necessary string
prior to branch cut for M86. Feature is targeting FastPath++.

Bug: 1106109
Change-Id: I6a27db87a1fc865c5b7d58c0a42bb1f0ad05c9a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364703
Commit-Queue: Filip Gorski <[email protected]>
Reviewed-by: Ted Choc <[email protected]>
Cr-Commit-Position: refs/heads/master@{#800108}
diff --git a/components/omnibox/common/omnibox_features.h b/components/omnibox/common/omnibox_features.h
index 7aa6a4c..bf84e4e 100644
--- a/components/omnibox/common/omnibox_features.h
+++ b/components/omnibox/common/omnibox_features.h
@@ -80,6 +80,7 @@
 extern const base::Feature kAdaptiveSuggestionsCount;
 extern const base::Feature kCompactSuggestions;
 extern const base::Feature kDeferredKeyboardPopup;
+extern const base::Feature kMostVisitedTiles;
 extern const base::Feature kRichAutocompletion;
 extern const base::Feature kOmniboxSearchReadyIncognito;
 extern const base::Feature kOmniboxSuggestionButtonRow;