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

webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc

 /*
  *  Copyright (c) 2015 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 162 matching lines @@
     states.encoder->SetTargetBitrate(rate);
     EXPECT_EQ(rate, states.encoder->GetTargetBitrate());
   }
 }
 
 namespace {
 
 // Returns a vector with the n evenly-spaced numbers a, a + (b - a)/(n - 1),
 // ..., b.
 std::vector<double> IntervalSteps(double a, double b, size_t n) {
-  RTC_DCHECK_GT(n, 1u);
+  RTC_DCHECK_GT(n, 1);
   const double step = (b - a) / (n - 1);
   std::vector<double> points;
   for (size_t i = 0; i < n; ++i)
     points.push_back(a + i * step);
   return points;
 }
 
 // Sets the packet loss rate to each number in the vector in turn, and verifies
 // that the loss rate as reported by the encoder is |expected_return| for all
 // of them.
@@ skipping 135 matching lines @@
   states.encoder->OnReceivedUplinkPacketLossFraction(kPacketLossFraction_2);
 
   // Now the output of packet loss fraction smoother should be
   // (0.02 + 0.198) / 2 = 0.109, which reach the threshold for the optimized
   // packet loss rate to increase to 0.05. If no smoothing has been made, the
   // optimized packet loss rate should have been increase to 0.1.
   EXPECT_DOUBLE_EQ(0.05, states.encoder->packet_loss_rate());
 }
 
 }  // namespace webrtc