Implement disabling and enabling media tracks

media/base/mock_filters.h

Index: media/base/mock_filters.h
diff --git a/media/base/mock_filters.h b/media/base/mock_filters.h
index 03f020ade154cb2984ff01133eacc8874393b096..e329473cedc1a108cf4e6bd7eba1ab08c9cd964e 100644
--- a/media/base/mock_filters.h
+++ b/media/base/mock_filters.h
@@ -73,6 +73,11 @@ class MockPipeline : public Pipeline {
                     base::TimeDelta,
                     const PipelineStatusCB&));
 
+  MOCK_METHOD1(OnEnabledAudioTracksChanged,
+               void(const std::vector<MediaTrack::Id>&));
+  MOCK_METHOD1(OnSelectedVideoTrackChanged,
+               void(const std::vector<MediaTrack::Id>&));
+
   // TODO(sandersd): This should automatically return true between Start() and
   // Stop(). (Or better, remove it from the interface entirely.)
   MOCK_CONST_METHOD0(IsRunning, bool());
@@ -122,6 +127,10 @@ class MockDemuxer : public Demuxer {
   MOCK_CONST_METHOD0(GetStartTime, base::TimeDelta());
   MOCK_CONST_METHOD0(GetTimelineOffset, base::Time());
   MOCK_CONST_METHOD0(GetMemoryUsage, int64_t());
+  MOCK_METHOD2(OnEnabledAudioTracksChanged,
+               void(const std::vector<MediaTrack::Id>&, base::TimeDelta));
+  MOCK_METHOD2(OnSelectedVideoTrackChanged,
+               void(const std::vector<MediaTrack::Id>&, base::TimeDelta));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDemuxer);
@@ -146,6 +155,9 @@ class MockDemuxerStream : public DemuxerStream {
   void set_liveness(Liveness liveness);
 
   VideoRotation video_rotation() override;
+  MOCK_CONST_METHOD0(enabled, bool());
+  MOCK_METHOD2(set_enabled, void(bool, base::TimeDelta));
+  MOCK_METHOD1(SetStreamRestartedCB, void(const StreamRestartedCB&));
 
  private:
   Type type_;