Convert channel counts to size_t.

webrtc/modules/audio_processing/audio_processing_impl_locking_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 459 matching lines @@
     }
   }
 }
 
 // Populates an audioframe frame of AudioFrame type with random data.
 void PopulateAudioFrame(AudioFrame* frame,
                         int16_t amplitude,
                         RandomGenerator* rand_gen) {
   ASSERT_GT(amplitude, 0);
   ASSERT_LE(amplitude, 32767);
-  for (int ch = 0; ch < frame->num_channels_; ch++) {
+  for (size_t ch = 0; ch < frame->num_channels_; ch++) {
     for (size_t k = 0; k < frame->samples_per_channel_; k++) {
       // Store random 16 bit number between -(amplitude+1) and
       // amplitude.
       frame->data_[k * ch] =
           rand_gen->RandInt(2 * amplitude + 1) - amplitude - 1;
     }
   }
 }
 
 AudioProcessingImplLockTest::AudioProcessingImplLockTest()
@@ skipping 633 matching lines @@
     DISABLED_AudioProcessingImplLockExtensive,
     AudioProcessingImplLockTest,
     ::testing::ValuesIn(TestConfig::GenerateExtensiveTestConfigs()));
 
 INSTANTIATE_TEST_CASE_P(
     AudioProcessingImplLockBrief,
     AudioProcessingImplLockTest,
     ::testing::ValuesIn(TestConfig::GenerateBriefTestConfigs()));
 
 }  // namespace webrtc