Add video-rendering to mojo media pipeline.

media/renderers/video_overlay_factory.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROMECAST_RENDERER_MEDIA_HOLE_FRAME_FACTORY_H_
-#define CHROMECAST_RENDERER_MEDIA_HOLE_FRAME_FACTORY_H_
+#ifndef MEDIA_RENDERERS_VIDEO_OVERLAY_FACTORY_H_
+#define MEDIA_RENDERERS_VIDEO_OVERLAY_FACTORY_H_
 
 #include <GLES2/gl2.h>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "gpu/command_buffer/common/sync_token.h"
+#include "media/base/media_export.h"
 
 namespace gfx {
 class Size;
-}
+}  // namespace gfx
 
 namespace media {
+
 class GpuVideoAcceleratorFactories;
 class VideoFrame;
-}
 
-namespace chromecast {
-namespace media {
+// Creates video overlay frames - native textures that get turned into
+// transparent holes in the browser compositor using overlay system.
+// This class must be used on GpuVideoAcceleratorFactories::GetTaskRunner().

[halliwell, 2016/05/19 15:47:50]

This comment seems a little incomplete now this class is in media/.  Should
probably clarify that the frames produced are dummy frames for the sole purpose
of carrying the overlay flag through to the compositor, to be replaced there. 
This assumes that the real video frame is rendered externally.

e.g. not to be confused with the overlay frames produced by GpuVideoDecoder.

+class MEDIA_EXPORT VideoOverlayFactory {
+ public:
+  explicit VideoOverlayFactory(
+      ::media::GpuVideoAcceleratorFactories* gpu_factories);
+  ~VideoOverlayFactory();
 
-// Creates VideoFrames for CMA - native textures that get turned into
-// transparent holes in the browser compositor using overlay system.
-// All calls (including ctor/dtor) must be on media thread.
-class HoleFrameFactory {
- public:
-  explicit HoleFrameFactory(
-      ::media::GpuVideoAcceleratorFactories* gpu_factories);
-  ~HoleFrameFactory();
-
-  scoped_refptr<::media::VideoFrame> CreateHoleFrame(const gfx::Size& size);
+  scoped_refptr<::media::VideoFrame> CreateFrame(const gfx::Size& size);
 
  private:
   ::media::GpuVideoAcceleratorFactories* gpu_factories_;
   gpu::Mailbox mailbox_;
   gpu::SyncToken sync_token_;
   GLuint texture_;
   GLuint image_id_;
 
-  DISALLOW_COPY_AND_ASSIGN(HoleFrameFactory);
+  DISALLOW_COPY_AND_ASSIGN(VideoOverlayFactory);
 };
 
 }  // namespace media
-}  // namespace chromecast
 
-#endif  // CHROMECAST_RENDERER_MEDIA_HOLE_FRAME_FACTORY_H_
+#endif  // MEDIA_RENDERERS_VIDEO_OVERLAY_FACTORY_H_