Add a PacketOptions struct to webrtc::Transport.

talk/media/webrtc/webrtcvideoengine2.h

Index: talk/media/webrtc/webrtcvideoengine2.h
diff --git a/talk/media/webrtc/webrtcvideoengine2.h b/talk/media/webrtc/webrtcvideoengine2.h
index 6b36642867f6025ace38016bca3f19fb81963365..0fc28d16c86d3307ad02ed6bd06d6afdb164a4d2 100644
--- a/talk/media/webrtc/webrtcvideoengine2.h
+++ b/talk/media/webrtc/webrtcvideoengine2.h
@@ -464,7 +464,9 @@ class WebRtcVideoChannel2 : public rtc::MessageHandler,
   void Construct(webrtc::Call* call, WebRtcVideoEngine2* engine);
   void SetDefaultOptions();
 
-  bool SendRtp(const uint8_t* data, size_t len) override;
+  bool SendRtp(const uint8_t* data,
+               size_t len,
+               const webrtc::PacketOptions& options) override;
   bool SendRtcp(const uint8_t* data, size_t len) override;
 
   void StartAllSendStreams();