[chromecast] Pass media task runner to MediaPipelineBackendManager.

chromecast/browser/cast_content_browser_client.cc

Index: chromecast/browser/cast_content_browser_client.cc
diff --git a/chromecast/browser/cast_content_browser_client.cc b/chromecast/browser/cast_content_browser_client.cc
index dc5902ac7e67d80b42745ebef9874ac48bb4bbe7..449bfe722e4b02e8671b32448015939f1a7f9d22 100644
--- a/chromecast/browser/cast_content_browser_client.cc
+++ b/chromecast/browser/cast_content_browser_client.cc
@@ -71,8 +71,7 @@ static scoped_ptr<mojo::ShellClient> CreateCastMojoMediaApplication(
     CastContentBrowserClient* browser_client) {
   scoped_ptr<::media::MojoMediaClient> mojo_media_client(
       new media::CastMojoMediaClient(
-          base::Bind(&CastContentBrowserClient::CreateMediaPipelineBackend,
-                     base::Unretained(browser_client))));
+          browser_client->GetCmaMediaPipelineClient()));

[alokp, 2016/04/01 03:05:16]

This change is not needed and will break mojo build.

[tianyuwang1, 2016/04/01 17:23:19]

Reverted this change.

   return scoped_ptr<mojo::ShellClient>(
       new ::media::MojoMediaApplication(std::move(mojo_media_client)));
 }
@@ -109,15 +108,21 @@ scoped_ptr<CastService> CastContentBrowserClient::CreateCastService(
 scoped_ptr<media::MediaPipelineBackend>
 CastContentBrowserClient::CreateMediaPipelineBackend(
     const media::MediaPipelineDeviceParams& params) {
-  return make_scoped_ptr(
-      media::MediaPipelineBackendManager::CreateMediaPipelineBackend(params));
+  DCHECK(cast_browser_main_parts_);
+  return cast_browser_main_parts_->media_pipeline_backend_manager()
+      ->CreateMediaPipelineBackend(params);
 }
 
 media::MediaResourceTracker*
 CastContentBrowserClient::media_resource_tracker() {
   return cast_browser_main_parts_->media_resource_tracker();
 }
-#endif  // OS_ANDROID
+
+media::MediaPipelineBackendManager*
+CastContentBrowserClient::media_pipeline_backend_manager() {
+  return cast_browser_main_parts_->media_pipeline_backend_manager();
+}
+#endif  // !defined(OS_ANDROID)
 
 void CastContentBrowserClient::SetMetricsClientId(
     const std::string& client_id) {