Add media::VideoEncodeAccelerator with WebRTC integration

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 5b3dac04b9a03cd7994a8ec7ec7e17b2afb65a7d..12f660ac48dadfc692d96e0ac00fee1c9c884951 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -19,7 +19,6 @@
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/public/renderer/render_thread.h"
-#include "content/renderer/media/renderer_gpu_video_decoder_factories.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -54,7 +53,7 @@ class ForwardingMessageFilter;
 
 namespace media {
 class AudioHardwareConfig;
-class GpuVideoDecoderFactories;
+class GpuVideoAcceleratorFactories;
 }
 
 namespace v8 {
@@ -256,9 +255,8 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   // not sent for at least one notification delay.
   void PostponeIdleNotification();
 
-  // Gets gpu factories, which will run on |factories_loop|. Returns NULL if VDA
-  // is disabled or a graphics context cannot be obtained.
-  scoped_refptr<RendererGpuVideoDecoderFactories> GetGpuFactories(
+  // Gets gpu factories, which will run on |factories_loop|.

[Ami GONE FROM CHROMIUM, 2013/07/31 23:01:12]

I think the NULL return value should be restored (see comments on .cc).

[sheu, 2013/08/02 01:27:49]

If VDA is disabled, we still might want VEA (which is independent of any
context).  See .cc

+  scoped_refptr<media::GpuVideoAcceleratorFactories> GetGpuFactories(
       const scoped_refptr<base::MessageLoopProxy>& factories_loop);
 
   // Returns a graphics context shared among all