Field trial removing tiles from NTP if URL is already open - for 1993 clients

chrome/browser/ui/search/instant_page.h

Index: chrome/browser/ui/search/instant_page.h
diff --git a/chrome/browser/ui/search/instant_page.h b/chrome/browser/ui/search/instant_page.h
index efd42b33b8f409f3d61b6dbb60c9ff6e448218e3..926ad5e7e61e9a4911bd591e8658e33bb2f92d77 100644
--- a/chrome/browser/ui/search/instant_page.h
+++ b/chrome/browser/ui/search/instant_page.h
@@ -195,6 +195,11 @@ class InstantPage : public content::WebContentsObserver,
 
   void ClearContents();
 
+  // Removes recommended URLs if a matching URL is already open in the Browser,
+  // if the Most Visited Tile Placement experiment is enabled, and the client is
+  // in the experiment group.
+  void MaybeRemoveMostVisitedItems(std::vector<InstantMostVisitedItem>* items);
+
   // Returns the InstantService for the |profile_|.
   InstantService* GetInstantService();