Support reading pixels from HW-decoded video textures into canvas/webgl.

webkit/media/android/webmediaplayer_android.cc

Index: webkit/media/android/webmediaplayer_android.cc
diff --git a/webkit/media/android/webmediaplayer_android.cc b/webkit/media/android/webmediaplayer_android.cc
index fae25d6ffd800c028354feb528cefc1960a7c526..a17770feba8d1ef69bfad6133efbbd2b142c26dc 100644
--- a/webkit/media/android/webmediaplayer_android.cc
+++ b/webkit/media/android/webmediaplayer_android.cc
@@ -337,6 +337,7 @@ void WebMediaPlayerAndroid::OnVideoSizeChanged(int width, int height) {
     video_frame_.reset(new WebVideoFrameImpl(VideoFrame::WrapNativeTexture(
         texture_id_, kGLTextureExternalOES, natural_size_, natural_size_,
         base::TimeDelta(),
+        VideoFrame::ReadPixelsCB(),
         base::Closure())));
   }
 }