Reland r101418: Fix aspect ratio and clarify video frame dimensions

media/video/video_decode_engine.h

Index: media/video/video_decode_engine.h
diff --git a/media/video/video_decode_engine.h b/media/video/video_decode_engine.h
index 6171232bdc912ef4772d2a48998803f1aa14e90c..4ec7cf5c867b4763cc6f63dc80775cb0cdf135aa 100644
--- a/media/video/video_decode_engine.h
+++ b/media/video/video_decode_engine.h
@@ -10,6 +10,7 @@
 #include "media/base/media_export.h"
 #include "media/base/video_decoder_config.h"
 #include "media/base/video_frame.h"
+#include "ui/gfx/size.h"
 
 class MessageLoop;
 
@@ -24,11 +25,8 @@ struct VideoCodecInfo {
   // Other parameter is only meaningful when this is true.
   bool success;
 
-  // Can be different with container's value.
-  uint32 surface_width;
-
-  // Can be different with container's value.
-  uint32 surface_height;
+  // Natural dimensions of video. May be different from coded and visible sizes.
+  gfx::Size natural_size;
 };
 
 class MEDIA_EXPORT VideoDecodeEngine {