blink: Cleanup class forward declarations

third_party/WebKit/Source/web/UserMediaClientImpl.h

 /*
  * Copyright (C) 2011 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 22 matching lines @@
 
 #include "modules/mediastream/UserMediaClient.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class MediaDevices;
 class MediaDevicesRequest;
 class UserMediaRequest;
 class WebUserMediaClient;
-class WebLocalFrameImpl;
 
 class UserMediaClientImpl final : public UserMediaClient {
  public:
   static std::unique_ptr<UserMediaClientImpl> create(
       WebUserMediaClient* client) {
     return wrapUnique(new UserMediaClientImpl(client));
   }
 
   // UserMediaClient ----------------------------------------------
   void requestUserMedia(UserMediaRequest*) override;
   void cancelUserMediaRequest(UserMediaRequest*) override;
   void requestMediaDevices(MediaDevicesRequest*) override;
   void requestSources(MediaStreamTrackSourcesRequest*) override;
   void setMediaDeviceChangeObserver(MediaDevices*) override;
 
  private:
   explicit UserMediaClientImpl(WebUserMediaClient*);
 
   WebUserMediaClient* m_client;
 };
 
 }  // namespace blink
 
 #endif  // UserMediaClientImpl_h