Use FFmpeg's reordered_opaque for presentation timestamp reordering.

media/base/video_frame.h

Index: media/base/video_frame.h
diff --git a/media/base/video_frame.h b/media/base/video_frame.h
index 0ad06286fc10143eb5cd04e714a385c3883f1fb5..e5cb8ba3df307b7ec9967dcfff39fddb9f26f2e3 100644
--- a/media/base/video_frame.h
+++ b/media/base/video_frame.h
@@ -80,14 +80,6 @@ class VideoFrame : public StreamSample {
   // StreamSample interface.
   virtual bool IsEndOfStream() const;
 
-  int GetRepeatCount() const {
-    return repeat_count_;
-  }
-
-  void SetRepeatCount(int repeat_count) {
-    repeat_count_ = repeat_count;
-  }
-
  protected:
   // Clients must use the static CreateFrame() method to create a new frame.
   VideoFrame(Format format,
@@ -119,9 +111,6 @@ class VideoFrame : public StreamSample {
   // Array of data pointers to each plane.
   uint8* data_[kMaxPlanes];
 
-  // Display meta data
-  int repeat_count_;
-
   DISALLOW_COPY_AND_ASSIGN(VideoFrame);
 };