Remove VideoDecoder::natural_size() & added VideoFrame::natural_size().

content/renderer/media/rtc_video_decoder.cc

Index: content/renderer/media/rtc_video_decoder.cc
diff --git a/content/renderer/media/rtc_video_decoder.cc b/content/renderer/media/rtc_video_decoder.cc
index f4a0e731755bad222afa2c04a2613ee473c627cf..3e55884ac6891df75d0c92f13ddb0ac4177f85f7 100644
--- a/content/renderer/media/rtc_video_decoder.cc
+++ b/content/renderer/media/rtc_video_decoder.cc
@@ -102,11 +102,6 @@ void RTCVideoDecoder::Stop(const base::Closure& closure) {
   closure.Run();
 }
 
-const gfx::Size& RTCVideoDecoder::natural_size() {
-  // TODO(vrk): Return natural size when aspect ratio support is implemented.
-  return visible_size_;
-}
-
 void RTCVideoDecoder::PrepareForShutdownHack() {
   if (!video_decoder_thread_->RunsTasksOnCurrentThread()) {
     video_decoder_thread_->PostTask(
@@ -161,6 +156,7 @@ void RTCVideoDecoder::RenderFrame(const cricket::VideoFrame* frame) {
       media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
                                      visible_size_.width(),
                                      visible_size_.height(),
+                                     visible_size_,
                                      timestamp - start_time_);
   last_frame_timestamp_ = timestamp;