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

chrome/browser/ui/search/instant_controller.h

Index: chrome/browser/ui/search/instant_controller.h
diff --git a/chrome/browser/ui/search/instant_controller.h b/chrome/browser/ui/search/instant_controller.h
index 7964d8717df60a0b574c19a60ac152d6f3112bde..9ef951185a48b36a0e80272d7b7279d50eb5166c 100644
--- a/chrome/browser/ui/search/instant_controller.h
+++ b/chrome/browser/ui/search/instant_controller.h
@@ -270,6 +270,11 @@ class InstantController : public InstantPage::Delegate,
   // Returns the InstantService for the browser profile.
   InstantService* GetInstantService() const;
 
+  // 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);
+
   BrowserInstantController* const browser_;
 
   // Whether the extended API and regular API are enabled. If both are false,