Move Liveness from DemuxerStreamProvider to DemuxerStream.

media/base/mock_filters.cc

Index: media/base/mock_filters.cc
diff --git a/media/base/mock_filters.cc b/media/base/mock_filters.cc
index 0dc6d4e1fd14db38b3862a30699fb92d223e0fb5..1c701a32c95a1c2b4361f7231892f78cf95cf771 100644
--- a/media/base/mock_filters.cc
+++ b/media/base/mock_filters.cc
@@ -18,7 +18,9 @@ MockDemuxer::MockDemuxer() {}
 
 MockDemuxer::~MockDemuxer() {}
 
-MockDemuxerStream::MockDemuxerStream(DemuxerStream::Type type) : type_(type) {}
+MockDemuxerStream::MockDemuxerStream(DemuxerStream::Type type)
+    : type_(type), liveness_(LIVENESS_UNKNOWN) {
+}
 
 MockDemuxerStream::~MockDemuxerStream() {}
 
@@ -26,6 +28,10 @@ DemuxerStream::Type MockDemuxerStream::type() {
   return type_;
 }
 
+DemuxerStream::Liveness MockDemuxerStream::liveness() {
+  return liveness_;
+}
+
 AudioDecoderConfig MockDemuxerStream::audio_decoder_config() {
   DCHECK_EQ(type_, DemuxerStream::AUDIO);
   return audio_decoder_config_;
@@ -48,6 +54,10 @@ void MockDemuxerStream::set_video_decoder_config(
   video_decoder_config_ = config;
 }
 
+void MockDemuxerStream::set_liveness(DemuxerStream::Liveness liveness) {
+  liveness_ = liveness;
+}
+
 VideoRotation MockDemuxerStream::video_rotation() {
   return VIDEO_ROTATION_0;
 }