gpu video: optimize HW video to SW canvas and implement it for WebRTC.

media/filters/gpu_video_accelerator_factories.h

Index: media/filters/gpu_video_accelerator_factories.h
diff --git a/media/filters/gpu_video_accelerator_factories.h b/media/filters/gpu_video_accelerator_factories.h
index 497e0ccb71ee7c842d14478949293eb7eb5e57c1..03494d04790cd560c8ad237ed25eb1b4c9295d5f 100644
--- a/media/filters/gpu_video_accelerator_factories.h
+++ b/media/filters/gpu_video_accelerator_factories.h
@@ -13,8 +13,6 @@
 #include "media/base/media_export.h"
 #include "media/video/video_encode_accelerator.h"
 
-class SkBitmap;
-
 namespace base {
 class SingleThreadTaskRunner;
 class SharedMemory;
@@ -60,12 +58,6 @@ class MEDIA_EXPORT GpuVideoAcceleratorFactories
 
   virtual void WaitSyncPoint(uint32 sync_point) = 0;
 
-  // Read pixels within |visible_rect| boundaries from a native texture and
-  // store into |pixels| as RGBA.
-  virtual void ReadPixels(uint32 texture_id,
-                          const gfx::Rect& visible_rect,
-                          const SkBitmap& pixels) = 0;
-
   // Allocate & return a shared memory segment.
   virtual scoped_ptr<base::SharedMemory> CreateSharedMemory(size_t size) = 0;