CmaMediaPipelineClient to watch media pipeline status

chromecast/browser/media/cma_message_filter_host.cc

Index: chromecast/browser/media/cma_message_filter_host.cc
diff --git a/chromecast/browser/media/cma_message_filter_host.cc b/chromecast/browser/media/cma_message_filter_host.cc
index 71ea3201d095ce7af0134bf08926373b6dff0fdd..fe32848397243d70c3dd430e8007ca0dc9a52373 100644
--- a/chromecast/browser/media/cma_message_filter_host.cc
+++ b/chromecast/browser/media/cma_message_filter_host.cc
@@ -299,10 +299,14 @@ void UpdateVideoSurfaceHost(int surface_id, const gfx::QuadF& quad) {
 
 CmaMessageFilterHost::CmaMessageFilterHost(
     int render_process_id,
-    const CreateDeviceComponentsCB& create_device_components_cb)
+    const CreateDeviceComponentsCB& create_device_components_cb,
+    const base::Closure& on_device_components_create_cb,
+    const base::Closure& on_device_components_destroy_cb)
     : content::BrowserMessageFilter(CastMediaMsgStart),
       process_id_(render_process_id),
       create_device_components_cb_(create_device_components_cb),
+      on_device_components_create_cb_(on_device_components_create_cb),
+      on_device_components_destroy_cb_(on_device_components_destroy_cb),
       task_runner_(MediaMessageLoop::GetTaskRunner()),
       weak_factory_(this) {
   weak_this_ = weak_factory_.GetWeakPtr();
@@ -380,6 +384,9 @@ void CmaMessageFilterHost::CreateMedia(int media_id, LoadType load_type) {
   client.error_cb = ::media::BindToCurrentLoop(
       base::Bind(&CmaMessageFilterHost::OnPlaybackError,
                  weak_this_, media_id, media::kNoTrackId));
+  client.device_components_create_cb = on_device_components_create_cb_;
+  client.device_components_destroy_cb = on_device_components_destroy_cb_;
+
   task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&SetMediaPipeline,