PacketBuffer now can save how many times a packet has been nacked.

webrtc/modules/video_coding/frame_object.h

Index: webrtc/modules/video_coding/frame_object.h
diff --git a/webrtc/modules/video_coding/frame_object.h b/webrtc/modules/video_coding/frame_object.h
index e8bb4811e6ecd7dd319f707852f4276df553f065..02d73428423a37176419a027b89a9475419b16a6 100644
--- a/webrtc/modules/video_coding/frame_object.h
+++ b/webrtc/modules/video_coding/frame_object.h
@@ -36,6 +36,8 @@ class FrameObject {
   size_t num_references;
   uint16_t references[kMaxFrameReferences];
   bool inter_layer_predicted;
+
+  size_t size;
 };
 
 class PacketBuffer;
@@ -44,11 +46,14 @@ class RtpFrameObject : public FrameObject {
  public:
   RtpFrameObject(PacketBuffer* packet_buffer,
                  uint16_t first_seq_num,
-                 uint16_t last_seq_num);
+                 uint16_t last_seq_num,
+                 size_t frame_size,
+                 int times_nacked);
 
   ~RtpFrameObject();
   uint16_t first_seq_num() const;
   uint16_t last_seq_num() const;
+  int times_nacked() const;
   FrameType frame_type() const;
   VideoCodecType codec_type() const;
   bool GetBitstream(uint8_t* destination) const override;
@@ -60,6 +65,10 @@ class RtpFrameObject : public FrameObject {
   VideoCodecType codec_type_;
   uint16_t first_seq_num_;
   uint16_t last_seq_num_;
+
+  // Equal to times nacked of the packet with the highet times nacked
+  // belonging to this frame.
+  int times_nacked_;
 };
 
 }  // namespace video_coding