Switch NOTIFICATION_TAB_PARENTED to use WebContents.

chrome/browser/sync/glue/session_change_processor.cc

 // 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.
 
 #include "chrome/browser/sync/glue/session_change_processor.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 94 matching lines @@
     case chrome::NOTIFICATION_BROWSER_OPENED: {
       Browser* browser = content::Source<Browser>(source).ptr();
       if (!browser || browser->profile() != profile_) {
         return;
       }
       DVLOG(1) << "Received BROWSER_OPENED for profile " << profile_;
       break;
     }
 
     case chrome::NOTIFICATION_TAB_PARENTED: {
-      SyncedTabDelegate* tab =
-          content::Source<TabContents>(source).ptr()->synced_tab_delegate();
+      TabContents* tab_contents = TabContents::FromWebContents(
+          content::Source<WebContents>(source).ptr());
+      SyncedTabDelegate* tab = tab_contents->synced_tab_delegate();
       if (!tab || tab->profile() != profile_) {
         return;
       }
       modified_tabs.push_back(tab);
       DVLOG(1) << "Received TAB_PARENTED for profile " << profile_;
       break;
     }
 
     case content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME: {
       TabContents* tab_contents = TabContents::FromWebContents(
@@ skipping 238 matching lines @@
   notification_registrar_.Add(this, chrome::NOTIFICATION_FAVICON_CHANGED,
       content::Source<Profile>(profile_));
 }
 
 void SessionChangeProcessor::StopObserving() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   notification_registrar_.RemoveAll();
 }
 
 }  // namespace browser_sync