Unify media track info reporting on a demuxer level

media/test/pipeline_integration_test_base.cc

Index: media/test/pipeline_integration_test_base.cc
diff --git a/media/test/pipeline_integration_test_base.cc b/media/test/pipeline_integration_test_base.cc
index ac35ee2c498d2692ddc77f4a3b4f2b0f07510d09..01bd1c1f12e027638f784fa6cc7a2c723f5ef0c4 100644
--- a/media/test/pipeline_integration_test_base.cc
+++ b/media/test/pipeline_integration_test_base.cc
@@ -10,6 +10,7 @@
 #include "base/memory/scoped_vector.h"
 #include "media/base/cdm_context.h"
 #include "media/base/media_log.h"
+#include "media/base/media_tracks.h"
 #include "media/base/test_data_util.h"
 #include "media/filters/chunk_demuxer.h"
 #if !defined(MEDIA_DISABLE_FFMPEG)
@@ -79,6 +80,11 @@ void PipelineIntegrationTestBase::DemuxerEncryptedMediaInitDataCB(
   encrypted_media_init_data_cb_.Run(type, init_data);
 }
 
+void PipelineIntegrationTestBase::DemuxerMediaTracksUpdatedCB(
+    scoped_ptr<MediaTracks> tracks) {
+  CHECK(tracks);
+}
+
 void PipelineIntegrationTestBase::OnEnded() {
   DCHECK(!ended_);
   ended_ = true;
@@ -262,12 +268,16 @@ void PipelineIntegrationTestBase::CreateDemuxer(
     scoped_ptr<DataSource> data_source) {
   data_source_ = std::move(data_source);
 
+  Demuxer::MediaTracksUpdatedCB tracks_updated_cb =
+      base::Bind(&PipelineIntegrationTestBase::DemuxerMediaTracksUpdatedCB,
+                 base::Unretained(this));
+
 #if !defined(MEDIA_DISABLE_FFMPEG)
   demuxer_ = scoped_ptr<Demuxer>(new FFmpegDemuxer(
       message_loop_.task_runner(), data_source_.get(),
       base::Bind(&PipelineIntegrationTestBase::DemuxerEncryptedMediaInitDataCB,
                  base::Unretained(this)),
-      new MediaLog()));
+      tracks_updated_cb, new MediaLog()));
 #endif
 }