Add video-rendering to mojo media pipeline.

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 422bc72e02d05744924fbebf2bff21325050a22d..4edb2a84b5fe3f0f77f314edaf00eef37a0dbe1a 100644
--- a/media/mojo/interfaces/renderer.mojom
+++ b/media/mojo/interfaces/renderer.mojom
@@ -6,6 +6,7 @@ module media.interfaces;
 
 import "media/mojo/interfaces/demuxer_stream.mojom";
 import "media/mojo/interfaces/media_types.mojom";
+import "ui/mojo/geometry/geometry.mojom";
 
 interface Renderer {
   // Initializes the Renderer with one or both of an audio and video stream,
@@ -45,6 +46,9 @@ interface RendererClient {
   // Called to report buffering state changes, see media_types.mojom.
   OnBufferingStateChange(BufferingState state);

[xhwang, 2016/04/12 19:40:37]

(not for this CL) This should be OnBufferingStateChange_d_ to be consistent with
the rest of the pipeline.

[alokp, 2016/04/19 00:16:07]

added TODO

 
+  // Called to report video natural size change.
+  OnNaturalSizeChanged(mojo.Size size);
+
   // Executed when rendering has reached the end of stream.
   OnEnded();