Move RtpTransportControllerSend to a new file.

webrtc/call/rtp_transport_controller_send_interface.h

Index: webrtc/call/rtp_transport_controller_send_interface.h
diff --git a/webrtc/call/rtp_transport_controller_send.h b/webrtc/call/rtp_transport_controller_send_interface.h
similarity index 91%
copy from webrtc/call/rtp_transport_controller_send.h
copy to webrtc/call/rtp_transport_controller_send_interface.h
index 117bca069c1a244f5de6862b0fd2fa226c327f42..31f07463a3a283ec364b0e96fa5c0edf0bcf758d 100644
--- a/webrtc/call/rtp_transport_controller_send.h
+++ b/webrtc/call/rtp_transport_controller_send_interface.h
@@ -8,12 +8,11 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
-#define WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
+#ifndef WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_INTERFACE_H_
+#define WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_INTERFACE_H_
 
 namespace webrtc {
 
-class Module;
 class PacketRouter;
 class RtpPacketSender;
 class SendSideCongestionController;
@@ -55,4 +54,4 @@ class RtpTransportControllerSendInterface {
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
+#endif  // WEBRTC_CALL_RTP_TRANSPORT_CONTROLLER_SEND_INTERFACE_H_