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

ppapi/proxy/ppb_audio_proxy.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppb_audio_proxy.h"
 
 #include "base/threading/simple_thread.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_audio.h"
 #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"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/audio_impl.h"
 #include "ppapi/thunk/ppb_audio_config_api.h"
 #include "ppapi/thunk/ppb_audio_trusted_api.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
 
+using ::ppapi::thunk::PPB_Audio_API;
+
 namespace pp {
 namespace proxy {
 
 class Audio : public PluginResource, public ppapi::AudioImpl {
  public:
   Audio(const HostResource& audio_id,
         PP_Resource config_id,
         PPB_Audio_Callback callback,
         void* user_data);
   virtual ~Audio();
 
   // ResourceObjectBase overrides.
-  virtual ::ppapi::thunk::PPB_Audio_API* AsAudio_API();
+  virtual PPB_Audio_API* AsPPB_Audio_API();
 
   // PPB_Audio_API implementation.
   virtual PP_Resource GetCurrentConfig() OVERRIDE;
   virtual PP_Bool StartPlayback() OVERRIDE;
   virtual PP_Bool StopPlayback() OVERRIDE;
 
  private:
   // Owning reference to the current config object. This isn't actually used,
   // we just dish it out as requested by the plugin.
   PP_Resource config_;
 
   DISALLOW_COPY_AND_ASSIGN(Audio);
 };
 
 Audio::Audio(const HostResource& audio_id,
              PP_Resource config_id,
              PPB_Audio_Callback callback,
              void* user_data)
     : PluginResource(audio_id),
       config_(config_id) {
   SetCallback(callback, user_data);
   PluginResourceTracker::GetInstance()->AddRefResource(config_);
 }
 
 Audio::~Audio() {
   PluginResourceTracker::GetInstance()->ReleaseResource(config_);
 }
 
-::ppapi::thunk::PPB_Audio_API* Audio::AsAudio_API() {
+PPB_Audio_API* Audio::AsPPB_Audio_API() {
   return this;
 }
 
 PP_Resource Audio::GetCurrentConfig() {
   // AddRef for the caller.
   PluginResourceTracker::GetInstance()->AddRefResource(config_);
   return config_;
 }
 
 PP_Bool Audio::StartPlayback() {
@@ skipping 149 matching lines @@
     ppb_audio_target()->StopPlayback(audio_id.host_resource());
 }
 
 // Processed in the plugin (message from host).
 void PPB_Audio_Proxy::OnMsgNotifyAudioStreamCreated(
     const HostResource& audio_id,
     int32_t result_code,
     IPC::PlatformFileForTransit socket_handle,
     base::SharedMemoryHandle handle,
     uint32_t length) {
-  PP_Resource plugin_resource =
-      PluginResourceTracker::GetInstance()->PluginResourceForHostResource(
-          audio_id);
-  ppapi::thunk::EnterResource<ppapi::thunk::PPB_Audio_API> enter(
-      plugin_resource, false);
+  EnterPluginFromHostResource<PPB_Audio_API> enter(audio_id);
   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
     // and then close them. This failure case is not performance critical.
     base::SyncSocket temp_socket(
         IPC::PlatformFileForTransitToPlatformFile(socket_handle));
     base::SharedMemory temp_mem(handle, false);
-    return;
+  } else {
+    static_cast<Audio*>(enter.object())->SetStreamInfo(
+        handle, length,
+        IPC::PlatformFileForTransitToPlatformFile(socket_handle));
   }
-  Audio* audio = static_cast<Audio*>(enter.object());
-  audio->SetStreamInfo(
-      handle, length, IPC::PlatformFileForTransitToPlatformFile(socket_handle));
 }
 
 void PPB_Audio_Proxy::AudioChannelConnected(
     int32_t result,
     const HostResource& resource) {
   IPC::PlatformFileForTransit socket_handle =
       IPC::InvalidPlatformFileForTransit();
   base::SharedMemoryHandle shared_memory = IPC::InvalidPlatformFileForTransit();
   uint32_t shared_memory_length = 0;
 
@@ skipping 48 matching lines @@
   *foreign_shared_memory_handle = dispatcher()->ShareHandleWithRemote(
       IntToPlatformFile(shared_memory_handle), false);
   if (*foreign_shared_memory_handle == IPC::InvalidPlatformFileForTransit())
     return PP_ERROR_FAILED;
 
   return PP_OK;
 }
 
 }  // namespace proxy
 }  // namespace pp