Move RtpExtension to api/ directory and config.h/.cc to call/.

webrtc/modules/rtp_rtcp/source/flexfec_sender_unittest.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
 #include <vector>
 
-#include "webrtc/config.h"
+#include "webrtc/api/rtpparameters.h"
 #include "webrtc/modules/rtp_rtcp/include/flexfec_sender.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 #include "webrtc/modules/rtp_rtcp/source/fec_test_helper.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_packet_to_send.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_sender.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
 #include "webrtc/system_wrappers/include/clock.h"
 #include "webrtc/test/gtest.h"
 
@@ skipping 290 matching lines @@
             fec_packet->Timestamp());
 
   RtpState updated_rtp_state = sender.GetRtpState();
   EXPECT_EQ(initial_rtp_state.sequence_number + 2,
             updated_rtp_state.sequence_number);
   EXPECT_EQ(initial_rtp_state.start_timestamp,
             updated_rtp_state.start_timestamp);
 }
 
 }  // namespace webrtc