[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/video_engine/vie_channel.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 1192 matching lines @@
 void ViEChannel::RegisterPreDecodeImageCallback(
     EncodedImageCallback* pre_decode_callback) {
   vcm_->RegisterPreDecodeImageCallback(pre_decode_callback);
 }
 
 int32_t ViEChannel::OnInitializeDecoder(
     const int32_t id,
     const int8_t payload_type,
     const char payload_name[RTP_PAYLOAD_NAME_SIZE],
     const int frequency,
-    const uint8_t channels,
+    const size_t channels,
     const uint32_t rate) {
   LOG(LS_INFO) << "OnInitializeDecoder " << static_cast<int>(payload_type)
                << " " << payload_name;
   vcm_->ResetDecoder();
 
   CriticalSectionScoped cs(crit_.get());
   decoder_reset_ = true;
   return 0;
 }
 
@@ skipping 19 matching lines @@
   CriticalSectionScoped cs(crit_.get());
   vcm_receive_stats_callback_ = receive_statistics_proxy;
 }
 
 void ViEChannel::SetIncomingVideoStream(
     IncomingVideoStream* incoming_video_stream) {
   CriticalSectionScoped cs(crit_.get());
   incoming_video_stream_ = incoming_video_stream;
 }
 }  // namespace webrtc