Move ownership of audio/video sinks to MojoRendererService.

chromecast/browser/media/cast_mojo_media_client.cc

Index: chromecast/browser/media/cast_mojo_media_client.cc
diff --git a/chromecast/browser/media/cast_mojo_media_client.cc b/chromecast/browser/media/cast_mojo_media_client.cc
index b530524cb91efd0b617aef94bd7cc82ad4ec71b5..24d0ffbe7c8def10723e1224e486f0f4afd07e1f 100644
--- a/chromecast/browser/media/cast_mojo_media_client.cc
+++ b/chromecast/browser/media/cast_mojo_media_client.cc
@@ -6,10 +6,38 @@
 
 #include "base/memory/ptr_util.h"
 #include "chromecast/browser/media/cast_renderer.h"
+#include "media/base/audio_renderer_sink.h"
 #include "media/base/cdm_factory.h"
 #include "media/base/media_log.h"
 #include "media/base/renderer_factory.h"
 
+namespace {
+class CastRendererFactory : public media::RendererFactory {
+ public:
+  CastRendererFactory(
+      const chromecast::media::CreateMediaPipelineBackendCB& create_backend_cb,
+      const scoped_refptr<media::MediaLog>& media_log)
+      : create_backend_cb_(create_backend_cb), media_log_(media_log) {}
+  ~CastRendererFactory() final {}
+
+  std::unique_ptr<media::Renderer> CreateRenderer(
+      const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      const scoped_refptr<base::TaskRunner>& worker_task_runner,
+      media::AudioRendererSink* audio_renderer_sink,
+      media::VideoRendererSink* video_renderer_sink,
+      const media::RequestSurfaceCB& request_surface_cb) final {
+    DCHECK(!audio_renderer_sink && !video_renderer_sink);
+    return base::MakeUnique<chromecast::media::CastRenderer>(
+        create_backend_cb_, media_task_runner, "");
+  }
+
+ private:
+  const chromecast::media::CreateMediaPipelineBackendCB create_backend_cb_;
+  scoped_refptr<media::MediaLog> media_log_;
+  DISALLOW_COPY_AND_ASSIGN(CastRendererFactory);
+};
+}  // namespace
+
 namespace chromecast {
 namespace media {
 
@@ -21,12 +49,16 @@ CastMojoMediaClient::CastMojoMediaClient(
 
 CastMojoMediaClient::~CastMojoMediaClient() {}
 
-std::unique_ptr<::media::Renderer> CastMojoMediaClient::CreateRenderer(
-    scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-    scoped_refptr<::media::MediaLog> media_log,
+scoped_refptr<::media::AudioRendererSink>
+CastMojoMediaClient::CreateAudioRendererSink(
     const std::string& audio_device_id) {
-  return base::MakeUnique<chromecast::media::CastRenderer>(
-      create_backend_cb_, std::move(media_task_runner), audio_device_id);
+  return nullptr;

[jrummell, 2016/08/30 19:59:59]

Do you need this? It looks the same as the base class (and you don't override
CreateVideoRendererSink).

[alokp, 2016/08/30 20:08:52]

I plan to. I need to capture the audio_device_id here. I first wanted to check
with you if the basic idea is acceptable with media team. Thanks for reviewing.

+}
+
+std::unique_ptr<::media::RendererFactory>
+CastMojoMediaClient::CreateRendererFactory(
+    const scoped_refptr<::media::MediaLog>& media_log) {
+  return base::MakeUnique<CastRendererFactory>(create_backend_cb_, media_log);
 }
 
 std::unique_ptr<::media::CdmFactory> CastMojoMediaClient::CreateCdmFactory(