Revert 87415 - Convert more interfaces to the new thunk system. This goes up to and including

ppapi/proxy/ppb_audio_proxy.cc

Index: ppapi/proxy/ppb_audio_proxy.cc
===================================================================
--- ppapi/proxy/ppb_audio_proxy.cc	(revision 87436)
+++ ppapi/proxy/ppb_audio_proxy.cc	(working copy)
@@ -10,7 +10,6 @@
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_var.h"
 #include "ppapi/c/trusted/ppb_audio_trusted.h"
-#include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/interface_id.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource.h"
@@ -22,8 +21,6 @@
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
 
-using ::ppapi::thunk::PPB_Audio_API;
-
 namespace pp {
 namespace proxy {
 
@@ -36,7 +33,7 @@
   virtual ~Audio();
 
   // ResourceObjectBase overrides.
-  virtual PPB_Audio_API* AsPPB_Audio_API();
+  virtual ::ppapi::thunk::PPB_Audio_API* AsAudio_API();
 
   // PPB_Audio_API implementation.
   virtual PP_Resource GetCurrentConfig() OVERRIDE;
@@ -65,7 +62,7 @@
   PluginResourceTracker::GetInstance()->ReleaseResource(config_);
 }
 
-PPB_Audio_API* Audio::AsPPB_Audio_API() {
+::ppapi::thunk::PPB_Audio_API* Audio::AsAudio_API() {
   return this;
 }
 
@@ -235,7 +232,11 @@
     IPC::PlatformFileForTransit socket_handle,
     base::SharedMemoryHandle handle,
     uint32_t length) {
-  EnterPluginFromHostResource<PPB_Audio_API> enter(audio_id);
+  PP_Resource plugin_resource =
+      PluginResourceTracker::GetInstance()->PluginResourceForHostResource(
+          audio_id);
+  ppapi::thunk::EnterResource<ppapi::thunk::PPB_Audio_API> enter(
+      plugin_resource, false);
   if (enter.failed() || result_code != PP_OK) {
     // The caller may still have given us these handles in the failure case.
     // The easiest way to clean these up is to just put them in the objects
@@ -243,11 +244,11 @@
     base::SyncSocket temp_socket(
         IPC::PlatformFileForTransitToPlatformFile(socket_handle));
     base::SharedMemory temp_mem(handle, false);
-  } else {
-    static_cast<Audio*>(enter.object())->SetStreamInfo(
-        handle, length,
-        IPC::PlatformFileForTransitToPlatformFile(socket_handle));
+    return;
   }
+  Audio* audio = static_cast<Audio*>(enter.object());
+  audio->SetStreamInfo(
+      handle, length, IPC::PlatformFileForTransitToPlatformFile(socket_handle));
 }
 
 void PPB_Audio_Proxy::AudioChannelConnected(