Create abstract interface for media::Pipeline.

media/cast/test/fake_media_source.h

 // Copyright 2014 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.
 
 // A fake media source that generates video and audio frames to a cast
 // sender.
 // This class can transcode a WebM file using FFmpeg. It can also
 // generate an animation and audio of fixed frequency.
 
 #ifndef MEDIA_CAST_TEST_FAKE_MEDIA_SOURCE_H_
@@ skipping 20 matching lines @@
 struct AVFormatContext;
 
 namespace media {
 
 class AudioBus;
 class AudioConverter;
 class AudioFifo;
 class AudioTimestampHelper;
 class FFmpegGlue;
 class InMemoryUrlProtocol;
+class VideoFrame;
 
 namespace cast {
 
 class AudioFrameInput;
 class VideoFrameInput;
 class TestAudioBusFactory;
 
 class FakeMediaSource : public media::AudioConverter::InputCallback {
  public:
   // |task_runner| is to schedule decoding tasks.
@@ skipping 117 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<FakeMediaSource> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeMediaSource);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif // MEDIA_CAST_TEST_FAKE_MEDIA_SOURCE_H_