Move push client to frame.

public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 60 matching lines @@
 class WebMediaPlayerClient;
 class WebMIDIClient;
 class WebNotificationPermissionCallback;
 class WebNotificationPresenter;
 class WebServiceWorkerProvider;
 class WebServiceWorkerProviderClient;
 class WebSocketHandle;
 class WebNode;
 class WebPlugin;
 class WebPluginPlaceholder;
+class WebPushClient;
 class WebRTCPeerConnectionHandler;
 class WebScreenOrientationClient;
 class WebSharedWorker;
 class WebSharedWorkerClient;
 class WebString;
 class WebURL;
 class WebURLLoader;
 class WebURLResponse;
 class WebUserMediaClient;
 class WebWorkerPermissionClientProxy;
@@ skipping 472 matching lines @@
     // ServiceWorker -------------------------------------------------------
 
     // Whether the document associated with WebDataSource is controlled by the
     // ServiceWorker.
     virtual bool isControlledByServiceWorker(WebDataSource&) { return false; }
 
     // Returns an identifier of the service worker controlling the document
     // associated with the WebDataSource.
     virtual int64_t serviceWorkerID(WebDataSource&) { return -1; }
 
+    // Push API ------------------------------------------------------------
+
+    virtual WebPushClient* pushClient() { return 0; }
+
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif