gpu: Make GPU command decoder know right format of a GPU video texture in Win.

content/common/gpu/media/dxva_video_decode_accelerator.cc

Index: content/common/gpu/media/dxva_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/dxva_video_decode_accelerator.cc b/content/common/gpu/media/dxva_video_decode_accelerator.cc
index 2fc53e7188acfd223d8cb847dd96e2b866adc4c9..d36d3ff6d169e4ed04121f5a9a8f780cb3f2bbcc 100644
--- a/content/common/gpu/media/dxva_video_decode_accelerator.cc
+++ b/content/common/gpu/media/dxva_video_decode_accelerator.cc
@@ -298,6 +298,7 @@ DXVAVideoDecodeAccelerator::DXVAPictureBuffer::Create(
                     "Failed to query ANGLE surface pointer",
                     linked_ptr<DXVAPictureBuffer>(NULL));
 
+  // FIXME: after moving to D3D11, use RGBA surface. crbug.com/438691
   HRESULT hr = decoder.device_->CreateTexture(
       buffer.size().width(),
       buffer.size().height(),
@@ -697,6 +698,11 @@ bool DXVAVideoDecodeAccelerator::CanDecodeOnIOThread() {
   return false;
 }
 
+// FIXME: after moving to D3D11, remove this workaround. crbug.com/438691
+unsigned DXVAVideoDecodeAccelerator::GetSufaceInternalFormat() const {
+  return GL_BGRA_EXT;
+}
+
 bool DXVAVideoDecodeAccelerator::InitDecoder(media::VideoCodecProfile profile) {
   HMODULE decoder_dll = NULL;