Revert of Completed the functionalities of SrtpTransport.

webrtc/pc/rtptransportinternal.h

Index: webrtc/pc/rtptransportinternal.h
diff --git a/webrtc/pc/rtptransportinternal.h b/webrtc/pc/rtptransportinternal.h
index 684afc4e676dbe1fb460eecf4c0e759e11bc0159..fd94d8e8f0e1f496d90cba1ea37c1bf67e6ea31e 100644
--- a/webrtc/pc/rtptransportinternal.h
+++ b/webrtc/pc/rtptransportinternal.h
@@ -54,13 +54,10 @@
 
   virtual bool IsWritable(bool rtcp) const = 0;
 
-  virtual bool SendRtpPacket(rtc::CopyOnWriteBuffer* packet,
-                             const rtc::PacketOptions& options,
-                             int flags) = 0;
-
-  virtual bool SendRtcpPacket(rtc::CopyOnWriteBuffer* packet,
-                              const rtc::PacketOptions& options,
-                              int flags) = 0;
+  virtual bool SendPacket(bool rtcp,
+                          rtc::CopyOnWriteBuffer* packet,
+                          const rtc::PacketOptions& options,
+                          int flags) = 0;
 
   virtual bool HandlesPayloadType(int payload_type) const = 0;