Make AudioParameters a class instead of a struct

content/renderer/pepper/pepper_platform_audio_output_impl.h

Index: content/renderer/pepper/pepper_platform_audio_output_impl.h
diff --git a/content/renderer/pepper/pepper_platform_audio_output_impl.h b/content/renderer/pepper/pepper_platform_audio_output_impl.h
index 5c1180540d9499bcf2d1c3d06f7a9a62e6f3b546..cdba240e22b46f1df106823d95dc96ddc39d46c1 100644
--- a/content/renderer/pepper/pepper_platform_audio_output_impl.h
+++ b/content/renderer/pepper/pepper_platform_audio_output_impl.h
@@ -10,7 +10,7 @@
 #include "content/renderer/media/audio_message_filter.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
-struct AudioParameters;
+class AudioParameters;
 
 namespace base {
 class MessageLoopProxy;
@@ -26,8 +26,8 @@ class PepperPlatformAudioOutputImpl
   // Factory function, returns NULL on failure. StreamCreated() will be called
   // when the stream is created.
   static PepperPlatformAudioOutputImpl* Create(
-      uint32_t sample_rate,
-      uint32_t sample_count,
+      int sample_rate,
+      int frames_per_buffer,
       webkit::ppapi::PluginDelegate::PlatformAudioCommonClient* client);
 
   // PlatformAudioOutput implementation (called on main thread).
@@ -39,8 +39,8 @@ class PepperPlatformAudioOutputImpl
   PepperPlatformAudioOutputImpl();
 
   bool Initialize(
-      uint32_t sample_rate,
-      uint32_t sample_count,
+      int sample_rate,
+      int frames_per_buffer,
       webkit::ppapi::PluginDelegate::PlatformAudioCommonClient* client);
 
   // I/O thread backends to above functions.