Cleanup RemotePlatformLayer when disconnecting RemoteFrame.

Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 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 557 matching lines @@
 {
     // The URL to the icon may be in the header. As such, only
     // ask the loader for the icon if it's finished loading.
     if (frame()->document()->loadEventFinished())
         return frame()->document()->iconURLs(iconTypesMask);
     return WebVector<WebIconURL>();
 }
 
 void WebLocalFrameImpl::setRemoteWebLayer(WebLayer* webLayer)
 {
-    if (!frame())
-        return;
-
-    frame()->setRemotePlatformLayer(webLayer);
+    ASSERT_NOT_REACHED();
 }
 
 void WebLocalFrameImpl::setPermissionClient(WebPermissionClient* permissionClient)
 {
     m_permissionClient = permissionClient;
 }
 
 void WebLocalFrameImpl::setSharedWorkerRepositoryClient(WebSharedWorkerRepositoryClient* client)
 {
     m_sharedWorkerRepositoryClient = SharedWorkerRepositoryClientImpl::create(client);
@@ skipping 1418 matching lines @@
 {
     m_frameWidget = frameWidget;
 }
 
 WebFrameWidgetImpl* WebLocalFrameImpl::frameWidget() const
 {
     return m_frameWidget;
 }
 
 } // namespace blink