Plumb callbacks from mojo media service to client.

media/mojo/interfaces/renderer.mojom

Index: media/mojo/interfaces/renderer.mojom
diff --git a/media/mojo/interfaces/renderer.mojom b/media/mojo/interfaces/renderer.mojom
index 16267c4ce5a3a2b2f52b88b4e8ed3bdf7707a3d0..0e31ec908437bfd13be8a0ed40e1f9942e15ee02 100644
--- a/media/mojo/interfaces/renderer.mojom
+++ b/media/mojo/interfaces/renderer.mojom
@@ -59,4 +59,10 @@ interface RendererClient {
 
   // Executed for the first video frame and whenever opacity changes.
   OnVideoOpacityChange(bool opaque);
+
+  // Called periodically to pass statistics to the web player.
+  OnStatisticsUpdate(PipelineStatistics stats);
+
+  // Called when the remote renderering service is waiting on the decryption key is pending.
+  //OnWaitingForDecryptionKey();

[halliwell, 2016/06/27 21:47:19]

uncomment?

[slan, 2016/06/27 22:19:39]

Done + formatting.

 };