media: Use mojo::StrongBinding in mojo media services.

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 935a9cf3a16031b0946842d400212f0beab740f6..c3e965b62b4a2b072effb97daaffbb3a4d39c928 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1521,8 +1521,8 @@ void RenderFrameHostImpl::OnHidePopup() {
 #if defined(ENABLE_MEDIA_MOJO_RENDERER)
 static void CreateMediaRendererService(
     mojo::InterfaceRequest<mojo::MediaRenderer> request) {
-  media::MojoRendererService* service = new media::MojoRendererService();
-  mojo::BindToRequest(service, &request);
+  // The created object is strongly bound to (and owned by) the pipe.

[jam, 2015/05/20 15:02:23]

isn't "strongly bound" and "owned by" redundant? I would just say "The created
object is owned by the pipe".

[xhwang, 2015/05/20 18:19:34]

Done.

+  new media::MojoRendererService(request.Pass());
 }
 #endif