Pass result of blockage across content API when new tab blocked.

chrome/browser/background/background_contents_service.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/background/background_contents_service.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 594 matching lines @@
     if (contents == it->second.contents)
       return it->first;
   }
   return EmptyString16();
 }
 
 void BackgroundContentsService::AddWebContents(
     WebContents* new_contents,
     WindowOpenDisposition disposition,
     const gfx::Rect& initial_pos,
-    bool user_gesture) {
+    bool user_gesture,
+    bool* was_blocked) {
   Browser* browser = browser::FindLastActiveWithProfile(
       Profile::FromBrowserContext(new_contents->GetBrowserContext()));
   if (browser) {
     chrome::AddWebContents(browser, NULL, new_contents, disposition,
-                           initial_pos, user_gesture);
+                           initial_pos, user_gesture, was_blocked);
   }
 }