Mark |Clock*| as |const Clock*| (for some CongestionController and BWE related modules)

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.
  */
 
@@ skipping 30 matching lines @@
     *min_bitrate_bps = congestion_controller::GetMinBitrateBps();
   if (*max_bitrate_bps > 0)
     *max_bitrate_bps = std::max(*min_bitrate_bps, *max_bitrate_bps);
   if (*bitrate_bps > 0)
     *bitrate_bps = std::max(*min_bitrate_bps, *bitrate_bps);
 }
 
 }  // namespace
 
 CongestionController::WrappingBitrateEstimator::WrappingBitrateEstimator(
-    RemoteBitrateObserver* observer, Clock* clock)
+    RemoteBitrateObserver* observer, const Clock* clock)
     : observer_(observer),
       clock_(clock),
       rbe_(new RemoteBitrateEstimatorSingleStream(observer_, clock_)),
       using_absolute_send_time_(false),
       packets_since_absolute_send_time_(0),
       min_bitrate_bps_(congestion_controller::GetMinBitrateBps()) {}
 
 void CongestionController::WrappingBitrateEstimator::IncomingPacket(
     int64_t arrival_time_ms,
     size_t payload_size,
@@ skipping 68 matching lines @@
 void CongestionController::WrappingBitrateEstimator::PickEstimator() {
   if (using_absolute_send_time_) {
     rbe_.reset(new RemoteBitrateEstimatorAbsSendTime(observer_, clock_));
   } else {
     rbe_.reset(new RemoteBitrateEstimatorSingleStream(observer_, clock_));
   }
   rbe_->SetMinBitrate(min_bitrate_bps_);
 }
 
 CongestionController::CongestionController(
-    Clock* clock,
+    const Clock* clock,
     Observer* observer,
     RemoteBitrateObserver* remote_bitrate_observer,
     RtcEventLog* event_log,
     PacketRouter* packet_router)
     : CongestionController(
           clock,
           observer,
           remote_bitrate_observer,
           event_log,
           packet_router,
           std::unique_ptr<PacedSender>(new PacedSender(clock, packet_router))) {
 }
 
 CongestionController::CongestionController(
-    Clock* clock,
+    const Clock* clock,
     Observer* observer,
     RemoteBitrateObserver* remote_bitrate_observer,
     RtcEventLog* event_log,
     PacketRouter* packet_router,
     std::unique_ptr<PacedSender> pacer)
     : clock_(clock),
       observer_(observer),
       event_log_(event_log),
       packet_router_(packet_router),
       pacer_(std::move(pacer)),
@@ skipping 244 matching lines @@
 bool CongestionController::IsSendQueueFull() const {
   return pacer_->ExpectedQueueTimeMs() > PacedSender::kMaxQueueLengthMs;
 }
 
 bool CongestionController::IsNetworkDown() const {
   rtc::CritScope cs(&network_state_lock_);
   return network_state_ == kNetworkDown;
 }
 
 }  // namespace webrtc