Adding a send side API for streaming

Review URL: https://webrtc-codereview.appspot.com/1070009

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3457 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/vie_channel.h b/video_engine/vie_channel.h
index 4ff77f5..5eec802 100644
--- a/video_engine/vie_channel.h
+++ b/video_engine/vie_channel.h
@@ -116,6 +116,7 @@
   WebRtc_Word32 SetHybridNACKFECStatus(const bool enable,
                                        const unsigned char payload_typeRED,
                                        const unsigned char payload_typeFEC);
+  int EnableSenderStreamingMode(int target_delay_ms);
   WebRtc_Word32 SetKeyFrameRequestMethod(const KeyFrameRequestMethod method);
   bool EnableRemb(bool enable);
   int SetSendTimestampOffsetStatus(bool enable, int id);
@@ -422,6 +423,8 @@
   // User set MTU, -1 if not set.
   uint16_t mtu_;
   const bool sender_;
+
+  int nack_history_size_sender_;
 };
 
 }  // namespace webrtc