Make HTMLMediaElement.setMediaKeys() asynchronous.

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 88 matching lines @@
 struct WebURLError;
 
 class WebFrameClient {
 public:
     // Factory methods -----------------------------------------------------
 
     // May return null.
     virtual WebPlugin* createPlugin(WebLocalFrame*, const WebPluginParams&) { return 0; }
 
     // May return null.
-    virtual WebMediaPlayer* createMediaPlayer(WebLocalFrame*, const WebURL&, WebMediaPlayerClient*) { return 0; }
+    // WebContentDecryptionModule* may be null if one has not yet been set.
+    virtual WebMediaPlayer* createMediaPlayer(WebLocalFrame*, const WebURL&, WebMediaPlayerClient*, WebContentDecryptionModule*) { return 0; }
 
     // May return null.
     virtual WebContentDecryptionModule* createContentDecryptionModule(WebLocalFrame*, const WebSecurityOrigin&, const WebString& keySystem) { return 0; }
 
     // May return null.
     virtual WebApplicationCacheHost* createApplicationCacheHost(WebLocalFrame*, WebApplicationCacheHostClient*) { return 0; }
 
     // May return null.
     virtual WebServiceWorkerProvider* createServiceWorkerProvider(WebLocalFrame* frame) { return 0; }
 
@@ skipping 451 matching lines @@
     // Whether the frame is controlled by the ServiceWorker
     virtual bool isControlledByServiceWorker() { return false; }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif