Implement disabling and enabling media tracks

media/filters/decrypting_demuxer_stream.h

 // Copyright (c) 2012 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_FILTERS_DECRYPTING_DEMUXER_STREAM_H_
 #define MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 44 matching lines @@
 
   // DemuxerStream implementation.
   void Read(const ReadCB& read_cb) override;
   AudioDecoderConfig audio_decoder_config() override;
   VideoDecoderConfig video_decoder_config() override;
   Type type() const override;
   Liveness liveness() 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:
   // For a detailed state diagram please see this link: http://goo.gl/8jAok
   // TODO(xhwang): Add a ASCII state diagram in this file after this class
   // stabilizes.
   // TODO(xhwang): Update this diagram for DecryptingDemuxerStream.
   enum State {
     kUninitialized = 0,
     kIdle,
     kPendingDemuxerRead,
@@ skipping 55 matching lines @@
 
   base::WeakPtr<DecryptingDemuxerStream> weak_this_;
   base::WeakPtrFactory<DecryptingDemuxerStream> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DecryptingDemuxerStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_