Move optional.h to webrtc/api/

webrtc/call/video_config.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_CALL_VIDEO_CONFIG_H_
 #define WEBRTC_CALL_VIDEO_CONFIG_H_
 
 #include <string>
 #include <vector>
 
+#include "webrtc/api/optional.h"
 #include "webrtc/common_types.h"
 #include "webrtc/rtc_base/basictypes.h"
-#include "webrtc/rtc_base/optional.h"
 #include "webrtc/rtc_base/refcount.h"
 #include "webrtc/rtc_base/scoped_ref_ptr.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 struct VideoStream {
   VideoStream();
   ~VideoStream();
   std::string ToString() const;
@@ skipping 118 matching lines @@
 
  private:
   // Access to the copy constructor is private to force use of the Copy()
   // method for those exceptional cases where we do use it.
   VideoEncoderConfig(const VideoEncoderConfig&);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_CALL_VIDEO_CONFIG_H_