Set coded size properly in D3D11VideoDecoder.

When setting the visible rect properly, the coded size was
inadvertently also changed to be the visible rect.  This CL puts
it back.

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I0b041b495bbc5a12095868ac0e6391826a445f77
Reviewed-on: https://chromium-review.googlesource.com/1217753Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: Frank Liberato <liberato@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590105}

media/gpu/windows/d3d11_video_decoder.cc

@@ -482,7 +482,7 @@ void D3D11VideoDecoder::OutputResult(const CodecPicture* picture,
   base::TimeDelta timestamp = picture_buffer->timestamp_;
   scoped_refptr<VideoFrame> frame = VideoFrame::WrapNativeTextures(
       PIXEL_FORMAT_NV12, picture_buffer->mailbox_holders(),
-      VideoFrame::ReleaseMailboxCB(), visible_rect.size(), visible_rect,
+      VideoFrame::ReleaseMailboxCB(), picture_buffer->size(), visible_rect,
       GetNaturalSize(visible_rect, pixel_aspect_ratio), timestamp);
 
   // TODO(liberato): bind this to the gpu main thread.