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

chrome/browser/ui/webui/ntp/most_visited_handler.h

Index: chrome/browser/ui/webui/ntp/most_visited_handler.h
diff --git a/chrome/browser/ui/webui/ntp/most_visited_handler.h b/chrome/browser/ui/webui/ntp/most_visited_handler.h
index 37f20e1eea7db7cd50262468cb4a70aac0ca7a38..fe5784a82b362bd7c6825a1a6ecb0d16e3e53f49 100644
--- a/chrome/browser/ui/webui/ntp/most_visited_handler.h
+++ b/chrome/browser/ui/webui/ntp/most_visited_handler.h
@@ -90,9 +90,10 @@ class MostVisitedHandler : public content::WebUIMessageHandler,
   // Returns the key used in url_blacklist_ for the passed |url|.
   std::string GetDictionaryKeyForUrl(const std::string& url);
 
-  // Looks at the browser's currently open URLs and removes any matching URLs
-  // from |pages_value_|.
-  void RemovePageValuesMatchingOpenTabs();
+  // 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 MaybeRemovePageValues();
 
   // Sends pages_value_ to the javascript side and resets page_value_.
   void SendPagesValue();