[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.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 996 matching lines @@
 bool AudioCodingImpl::RegisterSendCodec(AudioEncoder* send_codec) {
   FATAL() << "Not implemented yet.";
   return false;
 }
 
 bool AudioCodingImpl::RegisterSendCodec(int encoder_type,
                                         uint8_t payload_type,
                                         int frame_size_samples) {
   std::string codec_name;
   int sample_rate_hz;
-  int channels;
+  size_t channels;
   if (!MapCodecTypeToParameters(
           encoder_type, &codec_name, &sample_rate_hz, &channels)) {
     return false;
   }
   webrtc::CodecInst codec;
   AudioCodingModule::Codec(
       codec_name.c_str(), &codec, sample_rate_hz, channels);
   codec.pltype = payload_type;
   if (frame_size_samples > 0) {
     codec.pacsize = frame_size_samples;
@@ skipping 28 matching lines @@
 
 bool AudioCodingImpl::RegisterReceiveCodec(AudioDecoder* receive_codec) {
   FATAL() << "Not implemented yet.";
   return false;
 }
 
 bool AudioCodingImpl::RegisterReceiveCodec(int decoder_type,
                                            uint8_t payload_type) {
   std::string codec_name;
   int sample_rate_hz;
-  int channels;
+  size_t channels;
   if (!MapCodecTypeToParameters(
           decoder_type, &codec_name, &sample_rate_hz, &channels)) {
     return false;
   }
   webrtc::CodecInst codec;
   AudioCodingModule::Codec(
       codec_name.c_str(), &codec, sample_rate_hz, channels);
   codec.pltype = payload_type;
   return acm_old_->RegisterReceiveCodec(codec) == 0;
 }
@@ skipping 66 matching lines @@
 }
 
 void AudioCodingImpl::GetDecodingCallStatistics(
     AudioDecodingCallStats* call_stats) const {
   acm_old_->GetDecodingCallStatistics(call_stats);
 }
 
 bool AudioCodingImpl::MapCodecTypeToParameters(int codec_type,
                                                std::string* codec_name,
                                                int* sample_rate_hz,
-                                               int* channels) {
+                                               size_t* channels) {
   switch (codec_type) {
 #ifdef WEBRTC_CODEC_PCM16
     case acm2::ACMCodecDB::kPCM16B:
       *codec_name = "L16";
       *sample_rate_hz = 8000;
       *channels = 1;
       break;
     case acm2::ACMCodecDB::kPCM16Bwb:
       *codec_name = "L16";
       *sample_rate_hz = 16000;
@@ skipping 112 matching lines @@
       *channels = 1;
       break;
 #endif
     default:
       FATAL() << "Codec type " << codec_type << " not supported.";
   }
   return true;
 }
 
 }  // namespace webrtc