Add support for external video renderers in mojo.

media/mojo/services/mojo_renderer_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/mojo/services/mojo_renderer_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 97 matching lines @@
 base::TimeDelta MojoRendererImpl::GetMediaTime() {
   base::AutoLock auto_lock(lock_);
   DVLOG(3) << __FUNCTION__ << ": " << time_.InMilliseconds() << " ms";
   return time_;
 }
 
 bool MojoRendererImpl::HasAudio() {
   DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(remote_audio_renderer_.get());  // We always bind the renderer.
-  return true;
+  return demuxer_stream_provider_->GetStream(DemuxerStream::AUDIO);
 }
 
 bool MojoRendererImpl::HasVideo() {
   DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
-  return false;
+  return demuxer_stream_provider_->GetStream(DemuxerStream::VIDEO);
 }
 
 void MojoRendererImpl::SetCdm(MediaKeys* cdm) {
   DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   NOTIMPLEMENTED();
 }
 
 void MojoRendererImpl::OnTimeUpdate(int64_t time_usec, int64_t max_time_usec) {
   DVLOG(3) << __FUNCTION__ << ": " << time_usec << ", " << max_time_usec;
@@ skipping 59 matching lines @@
 
 void MojoRendererImpl::OnInitialized() {
   DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(!init_cb_.is_null());
 
   base::ResetAndReturn(&init_cb_).Run();
 }
 
 }  // namespace media