Convert channel counts to size_t.

webrtc/voice_engine/transmit_mixer.h

Index: webrtc/voice_engine/transmit_mixer.h
diff --git a/webrtc/voice_engine/transmit_mixer.h b/webrtc/voice_engine/transmit_mixer.h
index 071d91d77a38b592e59d6bf2a06d88b86a705a62..0aee1062316ce930c18a6bd59c09d4f8eb721b60 100644
--- a/webrtc/voice_engine/transmit_mixer.h
+++ b/webrtc/voice_engine/transmit_mixer.h
@@ -52,7 +52,7 @@ public:
 
     int32_t PrepareDemux(const void* audioSamples,
                          size_t nSamples,
-                         uint8_t  nChannels,
+                         size_t nChannels,
                          uint32_t samplesPerSec,
                          uint16_t totalDelayMS,
                          int32_t  clockDrift,
@@ -63,12 +63,12 @@ public:
     int32_t DemuxAndMix();
     // Used by the Chrome to pass the recording data to the specific VoE
     // channels for demux.
-    void DemuxAndMix(const int voe_channels[], int number_of_voe_channels);
+    void DemuxAndMix(const int voe_channels[], size_t number_of_voe_channels);
 
     int32_t EncodeAndSend();
     // Used by the Chrome to pass the recording data to the specific VoE
     // channels for encoding and sending to the network.
-    void EncodeAndSend(const int voe_channels[], int number_of_voe_channels);
+    void EncodeAndSend(const int voe_channels[], size_t number_of_voe_channels);
 
     // Must be called on the same thread as PrepareDemux().
     uint32_t CaptureLevel() const;
@@ -170,11 +170,11 @@ private:
 
     // Gets the maximum sample rate and number of channels over all currently
     // sending codecs.
-    void GetSendCodecInfo(int* max_sample_rate, int* max_channels);
+    void GetSendCodecInfo(int* max_sample_rate, size_t* max_channels);
 
     void GenerateAudioFrame(const int16_t audioSamples[],
                             size_t nSamples,
-                            int nChannels,
+                            size_t nChannels,
                             int samplesPerSec);
     int32_t RecordAudioToFile(uint32_t mixingFrequency);