Enable cpplint for webrtc/modules/bitrate_controller and fix all uncovered cpplint errors.

webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.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/modules/bitrate_controller/send_side_bandwidth_estimation.h"
 
+#include <algorithm>
 #include <cmath>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/system_wrappers/include/field_trial.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 #include "webrtc/call/rtc_event_log.h"
 
 namespace webrtc {
 namespace {
@@ skipping 11 matching lines @@
   int bitrate_kbps;
 };
 
 const UmaRampUpMetric kUmaRampupMetrics[] = {
     {"WebRTC.BWE.RampUpTimeTo500kbpsInMs", 500},
     {"WebRTC.BWE.RampUpTimeTo1000kbpsInMs", 1000},
     {"WebRTC.BWE.RampUpTimeTo2000kbpsInMs", 2000}};
 const size_t kNumUmaRampupMetrics =
     sizeof(kUmaRampupMetrics) / sizeof(kUmaRampupMetrics[0]);
 
-}
+}  // namespace
 
 SendSideBandwidthEstimation::SendSideBandwidthEstimation()
     : lost_packets_since_last_loss_update_Q8_(0),
       expected_packets_since_last_loss_update_(0),
       bitrate_(0),
       min_bitrate_configured_(kDefaultMinBitrateBps),
       max_bitrate_configured_(kDefaultMaxBitrateBps),
       last_low_bitrate_log_ms_(-1),
       has_decreased_since_last_fraction_loss_(false),
       time_last_receiver_block_ms_(-1),
@@ skipping 243 matching lines @@
     bitrate = min_bitrate_configured_;
   }
   return bitrate;
 }
 
 void SendSideBandwidthEstimation::SetEventLog(RtcEventLog* event_log) {
   event_log_ = event_log;
 }
 
 }  // namespace webrtc