blink: Cleanup class forward declarations

third_party/WebKit/Source/modules/mediastream/UserMediaRequest.h

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 23 matching lines @@
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/ModulesExport.h"
 #include "modules/mediastream/NavigatorUserMediaErrorCallback.h"
 #include "modules/mediastream/NavigatorUserMediaSuccessCallback.h"
 #include "platform/mediastream/MediaStreamSource.h"
 #include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
-class Dictionary;
 class Document;
 class MediaErrorState;
 class MediaStreamConstraints;
 class MediaStreamDescriptor;
 class UserMediaController;
 
 class MODULES_EXPORT UserMediaRequest final
     : public GarbageCollectedFinalized<UserMediaRequest>,
       public ContextLifecycleObserver {
   USING_GARBAGE_COLLECTED_MIXIN(UserMediaRequest);
@@ skipping 53 matching lines @@
 
   Member<UserMediaController> m_controller;
 
   Member<NavigatorUserMediaSuccessCallback> m_successCallback;
   Member<NavigatorUserMediaErrorCallback> m_errorCallback;
 };
 
 }  // namespace blink
 
 #endif  // UserMediaRequest_h