Adds the MostVisitedAction stat. This stat will provide a baseline to compare

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_MOST_VISITED_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_MOST_VISITED_HANDLER_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 34 matching lines @@
 
   // Callback for the "blacklistURLFromMostVisited" message.
   void HandleBlacklistURL(const base::ListValue* args);
 
   // Callback for the "removeURLsFromMostVisitedBlacklist" message.
   void HandleRemoveURLsFromBlacklist(const base::ListValue* args);
 
   // Callback for the "clearMostVisitedURLsBlacklist" message.
   void HandleClearBlacklist(const base::ListValue* args);
 
+  // Callback for the "mostVisitedAction" message.
+  void HandleMostVisitedAction(const base::ListValue* args);
+
+  // Callback for the "mostVisitedSelected" message.
+  void HandleMostVisitedSelected(const base::ListValue* args);
+
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   const std::vector<GURL>& most_visited_urls() const {
     return most_visited_urls_;
   }
 
   static void RegisterUserPrefs(PrefService* prefs);
@@ skipping 29 matching lines @@
   // was clicked on for metrics purposes.
   std::vector<GURL> most_visited_urls_;
 
   // We pre-fetch the first set of result pages.  This variable is false until
   // we get the first getMostVisited() call.
   bool got_first_most_visited_request_;
 
   // Keep the results of the db query here.
   scoped_ptr<base::ListValue> pages_value_;
 
+  // Whether the user has viewed the 'most visited' pane.
+  bool most_visited_viewed_;
+
+  // Whether the user has performed a "tracked" action to leave the page or not.
+  bool user_action_logged_;
+
   DISALLOW_COPY_AND_ASSIGN(MostVisitedHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_MOST_VISITED_HANDLER_H_