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

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index 32c203ceadb8b0bf67c368899a21129b28507517..c08e9d5c5ff5d9f962740b6f7c9bb0e3b52211d2 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -16,10 +16,6 @@
 #include "media/base/video_util.h"
 #include "ui/gfx/geometry/point.h"
 
-#if !defined(MEDIA_FOR_CAST_IOS)
-#include "third_party/skia/include/core/SkBitmap.h"
-#endif
-
 namespace media {
 
 static bool IsPowerOfTwo(size_t x) {
@@ -247,8 +243,7 @@ scoped_refptr<VideoFrame> VideoFrame::WrapNativeTexture(
     const gfx::Size& coded_size,
     const gfx::Rect& visible_rect,
     const gfx::Size& natural_size,
-    base::TimeDelta timestamp,
-    const ReadPixelsCB& read_pixels_cb) {
+    base::TimeDelta timestamp) {
   scoped_refptr<VideoFrame> frame(new VideoFrame(NATIVE_TEXTURE,
                                                  coded_size,
                                                  visible_rect,
@@ -257,19 +252,10 @@ scoped_refptr<VideoFrame> VideoFrame::WrapNativeTexture(
                                                  timestamp,
                                                  false));
   frame->mailbox_holder_release_cb_ = mailbox_holder_release_cb;
-  frame->read_pixels_cb_ = read_pixels_cb;
 
   return frame;
 }
 
-#if !defined(MEDIA_FOR_CAST_IOS)
-void VideoFrame::ReadPixelsFromNativeTexture(const SkBitmap& pixels) {
-  DCHECK_EQ(format_, NATIVE_TEXTURE);
-  if (!read_pixels_cb_.is_null())
-    read_pixels_cb_.Run(pixels);
-}
-#endif
-
 // static
 scoped_refptr<VideoFrame> VideoFrame::WrapExternalPackedMemory(
     Format format,