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

media/video/video_decode_accelerator.h

Index: media/video/video_decode_accelerator.h
diff --git a/media/video/video_decode_accelerator.h b/media/video/video_decode_accelerator.h
index 4df3b1c915836ef4dee55690d6a6880c3d1b24de..b84e629a755c60ff9ec3b6a6f464f4c0fa08e1ff 100644
--- a/media/video/video_decode_accelerator.h
+++ b/media/video/video_decode_accelerator.h
@@ -143,6 +143,10 @@ class MEDIA_EXPORT VideoDecodeAccelerator {
   // the first time so it can be cleared.
   virtual bool CanDecodeOnIOThread();
 
+  // Windows creates a BGRA texture.
+  // FIXME: after moving to D3D11, remove this workaround. crbug.com/438691
+  virtual unsigned GetSurfaceInternalFormat() const;

[Ken Russell (switch to Gerrit), 2014/12/08 19:52:34]

Minor note: the Google C++ style guide says to avoid using types like "unsigned"
- see
http://google-styleguide.googlecode.com/svn/trunk/cppguide.html#Integer_Types .
Either add a comment or return int here and static_cast it to GLenum in the
implementation.

[dshwang, 2014/12/08 20:30:38]

I see. Forward declare GLenum like gles2_cmd_format.h, shader.h, and
accelerated_surface_mac.h

+
  protected:
   // Do not delete directly; use Destroy() or own it with a scoped_ptr, which
   // will Destroy() it properly by default.