[NOT FOR REVIEW] Convert channel counts to size_t.

webrtc/modules/audio_device/audio_device_buffer.cc

Index: webrtc/modules/audio_device/audio_device_buffer.cc
diff --git a/webrtc/modules/audio_device/audio_device_buffer.cc b/webrtc/modules/audio_device/audio_device_buffer.cc
index cc6d6bb1f780cf5c2ae2e5e80979c2986fa565c3..c4b79430d45fa9a076c5034bf7177038c69227e3 100644
--- a/webrtc/modules/audio_device/audio_device_buffer.cc
+++ b/webrtc/modules/audio_device/audio_device_buffer.cc
@@ -169,7 +169,7 @@ int32_t AudioDeviceBuffer::PlayoutSampleRate() const
 //  SetRecordingChannels
 // ----------------------------------------------------------------------------
 
-int32_t AudioDeviceBuffer::SetRecordingChannels(uint8_t channels)
+int32_t AudioDeviceBuffer::SetRecordingChannels(size_t channels)
 {
     CriticalSectionScoped lock(&_critSect);
     _recChannels = channels;
@@ -181,7 +181,7 @@ int32_t AudioDeviceBuffer::SetRecordingChannels(uint8_t channels)
 //  SetPlayoutChannels
 // ----------------------------------------------------------------------------
 
-int32_t AudioDeviceBuffer::SetPlayoutChannels(uint8_t channels)
+int32_t AudioDeviceBuffer::SetPlayoutChannels(size_t channels)
 {
     CriticalSectionScoped lock(&_critSect);
     _playChannels = channels;
@@ -239,7 +239,7 @@ int32_t AudioDeviceBuffer::RecordingChannel(AudioDeviceModule::ChannelType& chan
 //  RecordingChannels
 // ----------------------------------------------------------------------------
 
-uint8_t AudioDeviceBuffer::RecordingChannels() const
+size_t AudioDeviceBuffer::RecordingChannels() const
 {
     return _recChannels;
 }
@@ -248,7 +248,7 @@ uint8_t AudioDeviceBuffer::RecordingChannels() const
 //  PlayoutChannels
 // ----------------------------------------------------------------------------
 
-uint8_t AudioDeviceBuffer::PlayoutChannels() const
+size_t AudioDeviceBuffer::PlayoutChannels() const
 {
     return _playChannels;
 }
@@ -487,7 +487,7 @@ int32_t AudioDeviceBuffer::RequestPlayoutData(size_t nSamples)
 {
     uint32_t playSampleRate = 0;
     size_t playBytesPerSample = 0;
-    uint8_t playChannels = 0;
+    size_t playChannels = 0;
     {
         CriticalSectionScoped lock(&_critSect);