Remove the strict dependency on WebContents for Web Notifications.

content/public/browser/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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 413 matching lines @@
   virtual blink::WebNotificationPermission
       CheckDesktopNotificationPermission(
           const GURL& source_url,
           ResourceContext* context,
           int render_process_id);
 
   // Show a desktop notification. If |cancel_callback| is non-null, it's set to
   // a callback which can be used to cancel the notification.
   virtual void ShowDesktopNotification(
       const ShowDesktopNotificationHostMsgParams& params,
-      RenderFrameHost* render_frame_host,
+      content::BrowserContext* browser_context,
       scoped_ptr<DesktopNotificationDelegate> delegate,
       base::Closure* cancel_callback) {}
 
   // The renderer is requesting permission to use Geolocation. When the answer
   // to a permission request has been determined, |result_callback| should be
   // called with the result. If |cancel_callback| is non-null, it's set to a
   // callback which can be used to cancel the permission request.
   virtual void RequestGeolocationPermission(
       WebContents* web_contents,
       int bridge_id,
@@ skipping 198 matching lines @@
 // camera. Note that this does not query the user. |type| must be
 // MEDIA_DEVICE_AUDIO_CAPTURE or MEDIA_DEVICE_VIDEO_CAPTURE.
 virtual bool CheckMediaAccessPermission(BrowserContext* browser_context,
                                         const GURL& security_origin,
                                         MediaStreamType type);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_