media: Cleanup class/struct forward declarations

media/cast/cast_sender.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This is the main interface for the cast sender.
 //
 // The AudioFrameInput, VideoFrameInput and PacketReciever interfaces should
 // be accessed from the main thread.
 
 #ifndef MEDIA_CAST_CAST_SENDER_H_
@@ skipping 12 matching lines @@
 #include "media/cast/net/cast_transport.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace media {
 class VideoFrame;
 
 namespace cast {
-class AudioSender;
-class VideoSender;
 
 class VideoFrameInput : public base::RefCountedThreadSafe<VideoFrameInput> {
  public:
   // Insert video frames into Cast sender. Frames will be encoded, packetized
   // and sent to the network.
   virtual void InsertRawVideoFrame(
       const scoped_refptr<media::VideoFrame>& video_frame,
       const base::TimeTicks& capture_time) = 0;
 
   // Creates a |VideoFrame| optimized for the encoder. When available, these
@@ skipping 75 matching lines @@
   // Change the target delay. This is only valid if the receiver
   // supports the "adaptive_target_delay" rtp extension.
   virtual void SetTargetPlayoutDelay(
       base::TimeDelta new_target_playout_delay) = 0;
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_CAST_SENDER_H_