Add a PacketOptions struct to webrtc::Transport.

talk/media/webrtc/webrtcvideoengine2.cc

Index: talk/media/webrtc/webrtcvideoengine2.cc
diff --git a/talk/media/webrtc/webrtcvideoengine2.cc b/talk/media/webrtc/webrtcvideoengine2.cc
index 7b290016e0e2bbe507c9455ad8550e427700e25c..2f0634043dbb9ec3bfb441c89421f6bc21835f94 100644
--- a/talk/media/webrtc/webrtcvideoengine2.cc
+++ b/talk/media/webrtc/webrtcvideoengine2.cc
@@ -1658,7 +1658,9 @@ void WebRtcVideoChannel2::OnLoadUpdate(Load load) {
   }
 }
 
-bool WebRtcVideoChannel2::SendRtp(const uint8_t* data, size_t len) {
+bool WebRtcVideoChannel2::SendRtp(const uint8_t* data,
+                                  size_t len,
+                                  const webrtc::PacketOptions& options) {
   rtc::Buffer packet(data, len, kMaxRtpPacketLen);
   return MediaChannel::SendPacket(&packet);
 }