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

media/filters/video_frame_generator.cc

Index: media/filters/video_frame_generator.cc
diff --git a/media/filters/video_frame_generator.cc b/media/filters/video_frame_generator.cc
index b8819d459d5c0c79c81162235a9fdef6389ae678..8c90f2e79a3e02a812340442eb374123575d9969 100644
--- a/media/filters/video_frame_generator.cc
+++ b/media/filters/video_frame_generator.cc
@@ -16,7 +16,7 @@ VideoFrameGenerator::VideoFrameGenerator(
     const gfx::Size& size,
     const base::TimeDelta& frame_duration)
     : message_loop_proxy_(message_loop_proxy),
-      natural_size_(size),
+      size_(size),
       stopped_(true),
       frame_duration_(frame_duration) {
 }
@@ -49,10 +49,6 @@ void VideoFrameGenerator::Stop(const base::Closure& closure) {
       base::Bind(&VideoFrameGenerator::StopOnDecoderThread, this, closure));
 }
 
-const gfx::Size& VideoFrameGenerator::natural_size() {
-  return natural_size_;
-}
-
 VideoFrameGenerator::~VideoFrameGenerator() {}
 
 void VideoFrameGenerator::InitializeOnDecoderThread(
@@ -76,10 +72,7 @@ void VideoFrameGenerator::ReadOnDecoderThread(const ReadCB& read_cb) {
   //
   // TODO(scherkus): migrate this to proper buffer recycling.
   scoped_refptr<VideoFrame> video_frame =
-      VideoFrame::CreateFrame(VideoFrame::YV12,
-                              natural_size_.width(),
-                              natural_size_.height(),
-                              current_time_);
+      VideoFrame::CreateFrame(VideoFrame::YV12, size_, size_, current_time_);
   current_time_ += frame_duration_;
 
   // TODO(wjia): set pixel data to pre-defined patterns if it's desired to