media: Support MojoRendererService in the browser process.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index e71c219091b1ee53ef930b4c34033ecd2f4ba380..57527a456cbc3d74c25474b31c66fb3a1b7e0b78 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -57,6 +57,8 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
+#include "media/mojo/interfaces/media_renderer.mojom.h"
+#include "media/mojo/services/mojo_renderer_service.h"
 #include "ui/accessibility/ax_tree.h"
 #include "url/gurl.h"
 
@@ -1161,6 +1163,12 @@ void RenderFrameHostImpl::OnHidePopup() {
 }
 #endif
 
+static void CreateMediaRendererService(
+    mojo::InterfaceRequest<mojo::MediaRenderer> request) {
+  media::MojoRendererService* service = new media::MojoRendererService();
+  mojo::BindToRequest(service, &request);
+}
+
 void RenderFrameHostImpl::RegisterMojoServices() {
   GeolocationServiceContext* geolocation_service_context =
       delegate_ ? delegate_->GetGeolocationServiceContext() : NULL;
@@ -1181,6 +1189,9 @@ void RenderFrameHostImpl::RegisterMojoServices() {
   GetServiceRegistry()->AddService<PermissionService>(
       base::Bind(&PermissionServiceContext::CreateService,
                  base::Unretained(permission_service_context_.get())));
+
+  GetServiceRegistry()->AddService<mojo::MediaRenderer>(

[xhwang, 2014/12/15 21:32:30]

Currently we don't want to provide this service by default on all platforms,
e.g. on Desktop. Maybe we should have a flag or ifdef for this.

[DaleCurtis, 2014/12/15 23:21:17]

I think an EXTERNAL_MEDIA_RENDERER define would work well. Alternatively if
GetServiceRegistry() is safe to call from other places, you can call it from a
more media appropriate call site. Maybe long term the service registry should do
something like PathService where each module can register their own services
locally and have them globally initialized automatically.

+      base::Bind(&CreateMediaRendererService));
 }
 
 void RenderFrameHostImpl::SetState(RenderFrameHostImplState rfh_state) {