[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/modules/audio_device/android/opensles_player.cc

Index: webrtc/modules/audio_device/android/opensles_player.cc
diff --git a/webrtc/modules/audio_device/android/opensles_player.cc b/webrtc/modules/audio_device/android/opensles_player.cc
index 0789ebf1baaf9d6c39fb77e8acfadd272e7d0777..63b448542d15d734ac0501da3c9da2df1431a610 100644
--- a/webrtc/modules/audio_device/android/opensles_player.cc
+++ b/webrtc/modules/audio_device/android/opensles_player.cc
@@ -14,6 +14,7 @@
 
 #include "webrtc/base/arraysize.h"
 #include "webrtc/base/checks.h"
+#include "webrtc/base/format_macros.h"
 #include "webrtc/modules/audio_device/android/audio_manager.h"
 #include "webrtc/modules/audio_device/android/fine_audio_buffer.h"
 
@@ -175,14 +176,14 @@ void OpenSLESPlayer::AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) {
   const int sample_rate_hz = audio_parameters_.sample_rate();
   ALOGD("SetPlayoutSampleRate(%d)", sample_rate_hz);
   audio_device_buffer_->SetPlayoutSampleRate(sample_rate_hz);
-  const int channels = audio_parameters_.channels();
-  ALOGD("SetPlayoutChannels(%d)", channels);
+  const size_t channels = audio_parameters_.channels();
+  ALOGD("SetPlayoutChannels(%" PRIuS ")", channels);
   audio_device_buffer_->SetPlayoutChannels(channels);
   CHECK(audio_device_buffer_);
   AllocateDataBuffers();
 }
 
-SLDataFormat_PCM OpenSLESPlayer::CreatePCMConfiguration(int channels,
+SLDataFormat_PCM OpenSLESPlayer::CreatePCMConfiguration(size_t channels,
                                                         int sample_rate,
                                                         int bits_per_sample) {
   ALOGD("CreatePCMConfiguration");