Make AudioParameters a class instead of a struct

content/renderer/pepper/pepper_platform_audio_input_impl.cc

Index: content/renderer/pepper/pepper_platform_audio_input_impl.cc
diff --git a/content/renderer/pepper/pepper_platform_audio_input_impl.cc b/content/renderer/pepper/pepper_platform_audio_input_impl.cc
index 3c3cbe6bb4012e0f23a3ddc2468c89e9dce7f771..a19bd94f60ba2a08c776deebb6ba4fdc6acd88c0 100644
--- a/content/renderer/pepper/pepper_platform_audio_input_impl.cc
+++ b/content/renderer/pepper/pepper_platform_audio_input_impl.cc
@@ -28,8 +28,8 @@ PepperPlatformAudioInputImpl::~PepperPlatformAudioInputImpl() {
 }
 
 bool PepperPlatformAudioInputImpl::Initialize(
-    uint32_t sample_rate,
-    uint32_t sample_count,
+    uint32_t samples_per_second,
+    uint32_t samples_per_packet,
     webkit::ppapi::PluginDelegate::PlatformAudioCommonClient* client) {
   DCHECK(client);
   // Make sure we don't call init more than once.
@@ -37,12 +37,12 @@ bool PepperPlatformAudioInputImpl::Initialize(
 
   client_ = client;
 
-  AudioParameters params;
-  params.format = AudioParameters::AUDIO_PCM_LINEAR;
-  params.channels = 1;
-  params.sample_rate = sample_rate;
-  params.bits_per_sample = 16;
-  params.samples_per_packet = sample_count;
+  AudioParameters params(
+      AudioParameters::AUDIO_PCM_LINEAR,
+      CHANNEL_LAYOUT_MONO,
+      samples_per_second,
+      16,
+      samples_per_packet);
 
   ChildProcess::current()->io_message_loop()->PostTask(
       FROM_HERE,