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

chrome/browser/background/background_contents_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_
 #define CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 44 matching lines @@
   // Returns true if there's a registered BackgroundContents for this app. It
   // is possible for this routine to return true when GetAppBackgroundContents()
   // returns false, if the BackgroundContents closed due to the render process
   // crashing.
   bool HasRegisteredBackgroundContents(const string16& appid);
 
   // Returns all currently opened BackgroundContents (used by the task manager).
   std::vector<BackgroundContents*> GetBackgroundContents() const;
 
   // BackgroundContents::Delegate implementation.
-  virtual void AddWebContents(content::WebContents* new_contents,
+  virtual bool AddWebContents(content::WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) OVERRIDE;
 
   // Gets the parent application id for the passed BackgroundContents. Returns
   // an empty string if no parent application found (e.g. passed
   // BackgroundContents has already shut down).
   const string16& GetParentApplicationId(BackgroundContents* contents) const;
 
   // Creates a new BackgroundContents using the passed |site| and
@@ skipping 103 matching lines @@
   // applications.
   // Key: application id
   // Value: BackgroundContentsInfo for the BC associated with that application
   typedef std::map<string16, BackgroundContentsInfo> BackgroundContentsMap;
   BackgroundContentsMap contents_map_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundContentsService);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_BACKGROUND_CONTENTS_SERVICE_H_