Move congestion controller to a separate module.

webrtc/modules/congestion_controller/congestion_controller.cc

 /*
  *  Copyright (c) 2012 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 "webrtc/call/congestion_controller.h"
+#include "webrtc/modules/congestion_controller/include/congestion_controller.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/socket.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/modules/pacing/paced_sender.h"
@@ skipping 226 matching lines @@
                   remote_bitrate_estimator_->TimeUntilNextProcess());
 }
 
 int32_t CongestionController::Process() {
   bitrate_controller_->Process();
   remote_bitrate_estimator_->Process();
   return 0;
 }
 
 }  // namespace webrtc