Change the navigation code of sync promo slightly to navigate

chrome/browser/ui/webui/sync_promo/sync_promo_ui.h

Index: chrome/browser/ui/webui/sync_promo/sync_promo_ui.h
===================================================================
--- chrome/browser/ui/webui/sync_promo/sync_promo_ui.h	(revision 147566)
+++ chrome/browser/ui/webui/sync_promo/sync_promo_ui.h	(working copy)
@@ -52,7 +52,9 @@
   // promo. If an empty URL is given then the promo will navigate to the NTP.
   // |source| identifies from where the sync promo is being called, and is used
   // to record sync promo UMA stats in the context of the source.
-  static GURL GetSyncPromoURL(const GURL& next_page, Source source);
+  // |auto_close| whether to close the sync promo automatically when done.
+  static GURL GetSyncPromoURL(
+      const GURL& next_page, Source source, bool auto_close);
 
   // Gets the next page URL from the query portion of the sync promo URL.
   static GURL GetNextPageURLForSyncPromoURL(const GURL& url);
@@ -61,6 +63,9 @@
   // The source identifies from where the sync promo was opened.
   static Source GetSourceForSyncPromoURL(const GURL& url);
 
+  // Returns whether the given sync URL contains auto_close parameter.
+  static bool GetAutoCloseForSyncPromoURL(const GURL& url);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncPromoUI);
 };