Implement disabling and enabling media tracks

media/base/fake_demuxer_stream.cc

Index: media/base/fake_demuxer_stream.cc
diff --git a/media/base/fake_demuxer_stream.cc b/media/base/fake_demuxer_stream.cc
index d074a54092d318cb8c50b1315c06e46d881e5c32..1cb06ab23af2218efcec46750e4189564f92784f 100644
--- a/media/base/fake_demuxer_stream.cc
+++ b/media/base/fake_demuxer_stream.cc
@@ -104,6 +104,18 @@ VideoRotation FakeDemuxerStream::video_rotation() {
   return VIDEO_ROTATION_0;
 }
 
+bool FakeDemuxerStream::enabled() const {
+  return true;
+}
+
+void FakeDemuxerStream::set_enabled(bool enabled, base::TimeDelta timestamp) {
+  NOTIMPLEMENTED();
+}
+
+void FakeDemuxerStream::SetStreamRestartedCB(const StreamRestartedCB& cb) {
+  NOTIMPLEMENTED();
+}
+
 void FakeDemuxerStream::HoldNextRead() {
   DCHECK(task_runner_->BelongsToCurrentThread());
   read_to_hold_ = next_read_num_;