Make sure natural_size is set when a frame is cropped.

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index 7b9a0684f4caef3794a55473d1037c831acb463b..64e898987d5d213e51f8cc90ef3ecf8bfda1dda2 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -181,11 +181,12 @@ scoped_refptr<VideoFrame> VideoFrame::WrapExternalYuvData(
 scoped_refptr<VideoFrame> VideoFrame::WrapVideoFrame(
       const scoped_refptr<VideoFrame>& frame,
       const gfx::Rect& visible_rect,
+      const gfx::Size& natural_size,
       const base::Closure& no_longer_needed_cb) {
   DCHECK(frame->visible_rect().Contains(visible_rect));
   scoped_refptr<VideoFrame> wrapped_frame(new VideoFrame(
-      frame->format(), frame->coded_size(), visible_rect,
-      frame->natural_size(), frame->GetTimestamp(), frame->end_of_stream()));
+      frame->format(), frame->coded_size(), visible_rect, natural_size,
+      frame->GetTimestamp(), frame->end_of_stream()));
 
   for (size_t i = 0; i < NumPlanes(frame->format()); ++i) {
     wrapped_frame->strides_[i] = frame->stride(i);