Implement disabling and enabling media tracks

media/mojo/services/mojo_demuxer_stream_adapter.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.
 
 #ifndef MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_ADAPTER_H_
 #define MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_ADAPTER_H_
 
 #include <memory>
 #include <queue>
 
@@ skipping 26 matching lines @@
   ~MojoDemuxerStreamAdapter() override;
 
   // DemuxerStream implementation.
   void Read(const ReadCB& read_cb) override;
   AudioDecoderConfig audio_decoder_config() override;
   VideoDecoderConfig video_decoder_config() override;
   Type type() const override;
   void EnableBitstreamConverter() override;
   bool SupportsConfigChanges() override;
   VideoRotation video_rotation() override;
+  bool enabled() const override;
+  void set_enabled(bool enabled, base::TimeDelta timestamp) override;
+  void SetStreamRestartedCB(const StreamRestartedCB& cb) override;
 
  private:
   void OnStreamReady(mojom::DemuxerStream::Type type,
                      mojo::ScopedDataPipeConsumerHandle consumer_handle,
                      mojom::AudioDecoderConfigPtr audio_config,
                      mojom::VideoDecoderConfigPtr video_config);
 
   // The callback from |demuxer_stream_| that a read operation has completed.
   // |read_cb| is a callback from the client who invoked Read() on |this|.
   void OnBufferReady(mojom::DemuxerStream::Status status,
@@ skipping 23 matching lines @@
 
   std::unique_ptr<MojoDecoderBufferReader> mojo_decoder_buffer_reader_;
 
   base::WeakPtrFactory<MojoDemuxerStreamAdapter> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(MojoDemuxerStreamAdapter);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_DEMUXER_STREAM_ADAPTER_H_