Make it so that allow_js_access: false can be used with background pages created by window.open.

chrome/browser/chrome_content_browser_client.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_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 122 matching lines @@
           int render_process_id) OVERRIDE;
   virtual void ShowDesktopNotification(
       const content::ShowDesktopNotificationHostMsgParams& params,
       int render_process_id,
       int render_view_id,
       bool worker) OVERRIDE;
   virtual void CancelDesktopNotification(
       int render_process_id,
       int render_view_id,
       int notification_id) OVERRIDE;
-  virtual bool CanCreateWindow(
+  virtual CanCreateWindowResult CanCreateWindow(
       const GURL& opener_url,
       const GURL& source_origin,
       WindowContainerType container_type,
       content::ResourceContext* context,
       int render_process_id) OVERRIDE;
   virtual std::string GetWorkerProcessTitle(
       const GURL& url, content::ResourceContext* context) OVERRIDE;
   virtual void ResourceDispatcherHostCreated() OVERRIDE;
   virtual content::SpeechRecognitionManagerDelegate*
       GetSpeechRecognitionManagerDelegate() OVERRIDE;
@@ skipping 32 matching lines @@
  private:
   // Set of origins that can use TCP/UDP private APIs from NaCl.
   std::set<std::string> allowed_socket_origins_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_