Moved transport.h from webrtc/ to webrtc/api, created build target and updated dependencies.

webrtc/transport.h

-/*
- *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_TRANSPORT_H_
-#define WEBRTC_TRANSPORT_H_
-
-#include <stddef.h>
-
-#include "webrtc/typedefs.h"
-
-namespace webrtc {
-
-// TODO(holmer): Look into unifying this with the PacketOptions in
-// asyncpacketsocket.h.
-struct PacketOptions {
-  // A 16 bits positive id. Negative ids are invalid and should be interpreted
-  // as packet_id not being set.
-  int packet_id = -1;
-};
-
-class Transport {
- public:
-  virtual bool SendRtp(const uint8_t* packet,
-                       size_t length,
-                       const PacketOptions& options) = 0;
-  virtual bool SendRtcp(const uint8_t* packet, size_t length) = 0;
-
- protected:
-  virtual ~Transport() {}
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_TRANSPORT_H_