Move optional.h to webrtc/api/

webrtc/media/base/mediachannel.h

 /*
  *  Copyright (c) 2004 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_MEDIA_BASE_MEDIACHANNEL_H_
 #define WEBRTC_MEDIA_BASE_MEDIACHANNEL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
+#include "webrtc/api/optional.h"
 #include "webrtc/api/rtpparameters.h"
 #include "webrtc/api/rtpreceiverinterface.h"
 #include "webrtc/api/video/video_timing.h"
 #include "webrtc/call/video_config.h"
 #include "webrtc/media/base/codec.h"
 #include "webrtc/media/base/mediaconstants.h"
 #include "webrtc/media/base/streamparams.h"
 #include "webrtc/media/base/videosinkinterface.h"
 #include "webrtc/media/base/videosourceinterface.h"
 #include "webrtc/rtc_base/basictypes.h"
 #include "webrtc/rtc_base/buffer.h"
 #include "webrtc/rtc_base/copyonwritebuffer.h"
 #include "webrtc/rtc_base/dscp.h"
 #include "webrtc/rtc_base/logging.h"
 #include "webrtc/rtc_base/networkroute.h"
-#include "webrtc/rtc_base/optional.h"
 #include "webrtc/rtc_base/sigslot.h"
 #include "webrtc/rtc_base/socket.h"
 #include "webrtc/rtc_base/window.h"
 // TODO(juberti): re-evaluate this include
 #include "webrtc/pc/audiomonitor.h"
 
 namespace rtc {
 class RateLimiter;
 class Timing;
 }
@@ skipping 1200 matching lines @@
                    const char*,
                    size_t> SignalDataReceived;
   // Signal when the media channel is ready to send the stream. Arguments are:
   //     writable(bool)
   sigslot::signal1<bool> SignalReadyToSend;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_MEDIACHANNEL_H_