Add video-rendering to mojo media pipeline.

chromecast/renderer/media/cma_renderer.cc

Index: chromecast/renderer/media/cma_renderer.cc
diff --git a/chromecast/renderer/media/cma_renderer.cc b/chromecast/renderer/media/cma_renderer.cc
index 0ed32ebb1767f0cb4f9a268c14fc414289f59e04..14788a67ff547c93edd7bcf201e9d582e7acd15b 100644
--- a/chromecast/renderer/media/cma_renderer.cc
+++ b/chromecast/renderer/media/cma_renderer.cc
@@ -89,6 +89,7 @@ void CmaRenderer::Initialize(
     const ::media::PipelineStatusCB& init_cb,
     const ::media::StatisticsCB& statistics_cb,
     const ::media::BufferingStateCB& buffering_state_cb,
+    const ::media::NaturalSizeChangedCB& natural_size_changed_cb,
     const base::Closure& ended_cb,
     const ::media::PipelineStatusCB& error_cb,
     const base::Closure& waiting_for_decryption_key_cb) {
@@ -100,6 +101,7 @@ void CmaRenderer::Initialize(
   DCHECK(!ended_cb.is_null());
   DCHECK(!error_cb.is_null());
   DCHECK(!buffering_state_cb.is_null());
+  DCHECK(!natural_size_changed_cb.is_null());
   DCHECK(!waiting_for_decryption_key_cb.is_null());
   DCHECK(demuxer_stream_provider->GetStream(::media::DemuxerStream::AUDIO) ||
          demuxer_stream_provider->GetStream(::media::DemuxerStream::VIDEO));
@@ -112,6 +114,7 @@ void CmaRenderer::Initialize(
   demuxer_stream_provider_ = demuxer_stream_provider;
   statistics_cb_ = statistics_cb;
   buffering_state_cb_ = buffering_state_cb;
+  natural_size_changed_cb_ = natural_size_changed_cb;
   ended_cb_ = ended_cb;
   error_cb_ = error_cb;
   waiting_for_decryption_key_cb_ = waiting_for_decryption_key_cb;
@@ -408,6 +411,7 @@ void CmaRenderer::OnNaturalSizeChanged(const gfx::Size& size) {
   DCHECK(thread_checker_.CalledOnValidThread());
   video_renderer_sink_->PaintFrameUsingOldRenderingPath(
       hole_frame_factory_->CreateHoleFrame(size));
+  natural_size_changed_cb_.Run(size);
 }
 
 void CmaRenderer::OnPlaybackTimeUpdated(base::TimeDelta time,