[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc

Index: webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc
diff --git a/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc b/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc
index 1c028c97443c6a1e59de242e651d380ad155a49e..9994d6aa7b2521a343a2bb71fe5bdaa10b3a47f4 100644
--- a/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc
+++ b/webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.cc
@@ -210,7 +210,7 @@ NetEqQualityTest::NetEqQualityTest(int block_duration_ms,
                                    int out_sampling_khz,
                                    enum NetEqDecoder decoder_type)
     : decoder_type_(decoder_type),
-      channels_(FLAGS_channels),
+      channels_(static_cast<size_t>(FLAGS_channels)),
       decoded_time_ms_(0),
       decodable_time_ms_(0),
       drift_factor_(FLAGS_drift_factor),
@@ -392,7 +392,7 @@ int NetEqQualityTest::Transmit() {
 }
 
 int NetEqQualityTest::DecodeBlock() {
-  int channels;
+  size_t channels;
   size_t samples;
   int ret = neteq_->GetAudio(out_size_samples_ * channels_, &out_data_[0],
                              &samples, &channels, NULL);