RTC_[D]CHECK_op: Remove "u" suffix on integer constants

webrtc/modules/audio_processing/level_controller/level_controller.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.
  */
 
@@ skipping 190 matching lines @@
   saturating_gain_estimator_.Initialize();
   metrics_.Initialize(sample_rate_hz);
 
   last_gain_ = 1.0f;
   sample_rate_hz_ = rtc::Optional<int>(sample_rate_hz);
   dc_forgetting_factor_ = 0.01f * sample_rate_hz / 48000.f;
   std::fill(dc_level_, dc_level_ + arraysize(dc_level_), 0.f);
 }
 
 void LevelController::Process(AudioBuffer* audio) {
-  RTC_DCHECK_LT(0u, audio->num_channels());
-  RTC_DCHECK_GE(2u, audio->num_channels());
+  RTC_DCHECK_LT(0, audio->num_channels());
+  RTC_DCHECK_GE(2, audio->num_channels());
   RTC_DCHECK_NE(0.f, dc_forgetting_factor_);
   RTC_DCHECK(sample_rate_hz_);
   data_dumper_->DumpWav("lc_input", audio->num_frames(),
                         audio->channels_const_f()[0], *sample_rate_hz_, 1);
 
   // Remove DC level.
   for (size_t k = 0; k < audio->num_channels(); ++k) {
     UpdateAndRemoveDcLevel(
         dc_forgetting_factor_, &dc_level_[k],
         rtc::ArrayView<float>(audio->channels_f()[k], audio->num_frames()));
@@ skipping 61 matching lines @@
 
 bool LevelController::Validate(
     const AudioProcessing::Config::LevelController& config) {
   return (config.initial_peak_level_dbfs <
               std::numeric_limits<float>::epsilon() &&
           config.initial_peak_level_dbfs >
               -(100.f + std::numeric_limits<float>::epsilon()));
 }
 
 }  // namespace webrtc