Make AudioParameters a class instead of a struct

content/renderer/media/webrtc_audio_device_unittest.cc

Index: content/renderer/media/webrtc_audio_device_unittest.cc
diff --git a/content/renderer/media/webrtc_audio_device_unittest.cc b/content/renderer/media/webrtc_audio_device_unittest.cc
index 33507f06cbee270cdeff8a9488d47b5ba0f5a911..95babf3b54c05cfbbd0b29e236997d0f25b79b49 100644
--- a/content/renderer/media/webrtc_audio_device_unittest.cc
+++ b/content/renderer/media/webrtc_audio_device_unittest.cc
@@ -39,9 +39,9 @@ class AudioUtil : public AudioUtilInterface {
       const std::string& device_id) OVERRIDE {
     return media::GetAudioInputHardwareSampleRate(device_id);
   }
-  virtual uint32 GetAudioInputHardwareChannelCount(
+  virtual ChannelLayout GetAudioInputHardwareChannelLayout(
       const std::string& device_id) OVERRIDE {
-    return media::GetAudioInputHardwareChannelCount(device_id);
+    return media::GetAudioInputHardwareChannelLayout(device_id);
   }
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioUtil);
@@ -50,10 +50,10 @@ class AudioUtil : public AudioUtilInterface {
 class AudioUtilNoHardware : public AudioUtilInterface {
  public:
   AudioUtilNoHardware(double output_rate, double input_rate,
-                      uint32 input_channels)
+                      ChannelLayout input_channel_layout)
       : output_rate_(output_rate),
         input_rate_(input_rate),
-        input_channels_(input_channels) {
+        input_channel_layout_(input_channel_layout) {
   }
 
   virtual double GetAudioHardwareSampleRate() OVERRIDE {
@@ -63,15 +63,15 @@ class AudioUtilNoHardware : public AudioUtilInterface {
       const std::string& device_id) OVERRIDE {
     return input_rate_;
   }
-  virtual uint32 GetAudioInputHardwareChannelCount(
+  virtual ChannelLayout GetAudioInputHardwareChannelLayout(
       const std::string& device_id) OVERRIDE {
-    return input_channels_;
+    return input_channel_layout_;
   }
 
  private:
   double output_rate_;
   double input_rate_;
-  uint32 input_channels_;
+  ChannelLayout input_channel_layout_;
   DISALLOW_COPY_AND_ASSIGN(AudioUtilNoHardware);
 };
 
@@ -237,7 +237,7 @@ TEST_F(WebRTCAudioDeviceTest, TestValidOutputRates) {
 // Basic test that instantiates and initializes an instance of
 // WebRtcAudioDeviceImpl.
 TEST_F(WebRTCAudioDeviceTest, Construct) {
-  AudioUtilNoHardware audio_util(48000.0, 48000.0, 1);
+  AudioUtilNoHardware audio_util(48000.0, 48000.0, CHANNEL_LAYOUT_MONO);
   SetAudioUtilCallback(&audio_util);
   scoped_refptr<WebRtcAudioDeviceImpl> audio_device(
       new WebRtcAudioDeviceImpl());