Convert more interfaces to the new thunk system. This goes up to and including

webkit/plugins/ppapi/ppb_audio_impl.cc

Index: webkit/plugins/ppapi/ppb_audio_impl.cc
===================================================================
--- webkit/plugins/ppapi/ppb_audio_impl.cc	(revision 87442)
+++ webkit/plugins/ppapi/ppb_audio_impl.cc	(working copy)
@@ -26,7 +26,8 @@
 PPB_AudioConfig_Impl::~PPB_AudioConfig_Impl() {
 }
 
-::ppapi::thunk::PPB_AudioConfig_API* PPB_AudioConfig_Impl::AsAudioConfig_API() {
+::ppapi::thunk::PPB_AudioConfig_API*
+PPB_AudioConfig_Impl::AsPPB_AudioConfig_API() {
   return this;
 }
 
@@ -62,11 +63,11 @@
   }
 }
 
-::ppapi::thunk::PPB_Audio_API* PPB_Audio_Impl::AsAudio_API() {
+::ppapi::thunk::PPB_Audio_API* PPB_Audio_Impl::AsPPB_Audio_API() {
   return this;
 }
 
-::ppapi::thunk::PPB_AudioTrusted_API* PPB_Audio_Impl::AsAudioTrusted_API() {
+::ppapi::thunk::PPB_AudioTrusted_API* PPB_Audio_Impl::AsPPB_AudioTrusted_API() {
   return this;
 }