Change default homepage experience.

chrome/browser/browser.h

Index: chrome/browser/browser.h
diff --git a/chrome/browser/browser.h b/chrome/browser/browser.h
index be6af7e1aed3172215790241d7b2b0aad14e7b46..c88521e3db2d7c7894c9de421cff9131cb65c53e 100644
--- a/chrome/browser/browser.h
+++ b/chrome/browser/browser.h
@@ -395,6 +395,12 @@ class Browser : public TabStripModelDelegate,
 
   /////////////////////////////////////////////////////////////////////////////
 
+  // 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);