Make AudioParameters a class instead of a struct

content/renderer/media/renderer_webaudiodevice_impl.cc

Index: content/renderer/media/renderer_webaudiodevice_impl.cc
diff --git a/content/renderer/media/renderer_webaudiodevice_impl.cc b/content/renderer/media/renderer_webaudiodevice_impl.cc
index 03778f13ffd4b9a53cbc759c60dfc6b51685d6d3..d0543250597413ad3260719d915507693540f985 100644
--- a/content/renderer/media/renderer_webaudiodevice_impl.cc
+++ b/content/renderer/media/renderer_webaudiodevice_impl.cc
@@ -7,11 +7,11 @@
 using WebKit::WebAudioDevice;
 using WebKit::WebVector;
 
-RendererWebAudioDeviceImpl::RendererWebAudioDeviceImpl(size_t buffer_size,
-    int channels, double sample_rate, WebAudioDevice::RenderCallback* callback)
+RendererWebAudioDeviceImpl::RendererWebAudioDeviceImpl(
+    const AudioParameters& params, WebAudioDevice::RenderCallback* callback)
     : is_running_(false),
       client_callback_(callback) {
-  audio_device_ = new AudioDevice(buffer_size, channels, sample_rate, this);
+  audio_device_ = new AudioDevice(params, this);
 }
 
 RendererWebAudioDeviceImpl::~RendererWebAudioDeviceImpl() {