Integrate VDA with WebRTC.

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 dfe02901a76253942b9b3614fccb2781fa61ef9d..561fcf6880bcf707801e1854e56bdbcfdecdbc66 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -20,6 +20,7 @@
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/public/renderer/render_thread.h"
 #include "ipc/ipc_channel_proxy.h"
+#include "media/filters/gpu_video_decoder.h"
 #include "ui/gfx/native_widget_types.h"
 
 class GrContext;
@@ -253,6 +254,10 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   // not sent for at least one notification delay.
   void PostponeIdleNotification();
 
+  // Gets gpu factories. Returns NULL if VDA is disabled or a graphics context
+  // cannot be obtained.
+  scoped_refptr<media::GpuVideoDecoder::Factories> GetGpuFactories();
+
   // Returns a graphics context shared among all
   // RendererGpuVideoDecoderFactories, or NULL on error.  Context remains owned
   // by this class and must be null-tested before each use to detect context