Change default homepage experience.

chrome/browser/browser.h

 // Copyright (c) 2006-2009 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_BROWSER_H_
 #define CHROME_BROWSER_BROWSER_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 377 matching lines @@
   void OpenAboutChromeDialog();
   void OpenHelpTab();
 #if defined(OS_CHROMEOS)
   void ShowControlPanel();
 #endif
 
   virtual void UpdateDownloadShelfVisibility(bool visible);
 
   /////////////////////////////////////////////////////////////////////////////
 
+  // Sets the value of homepage related prefs to new values. Since we do not
+  // want to change these values for existing users, we can not change the
+  // default values under RegisterUserPrefs. This method gets called during
+  // First Run.
+  static void SetNewHomePagePrefs(PrefService* prefs);
+
   static void RegisterPrefs(PrefService* prefs);
   static void RegisterUserPrefs(PrefService* prefs);
 
   // Returns the Browser which contains the tab with the given
   // NavigationController, also filling in |index| (if valid) with the tab's
   // index in the tab strip.
   // Returns NULL if not found.
   // This call is O(N) in the number of tabs.
   static Browser* GetBrowserForController(
       const NavigationController* controller, int* index);
@@ skipping 367 matching lines @@
   // The browser idle task helps cleanup unused memory resources when idle.
   scoped_ptr<BrowserIdleTimer> idle_task_;
 
   // Keep track of the encoding auto detect pref.
   BooleanPrefMember encoding_auto_detect_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_H_