PPAPI: Add PluginPrivateFileSystem

ppapi/thunk/ppb_plugin_private_file_system_private_api.h

-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Copyright 2013 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.
 
-#ifndef PPAPI_THUNK_PPB_EXT_CRX_FILE_SYSTEM_API_H_
-#define PPAPI_THUNK_PPB_EXT_CRX_FILE_SYSTEM_API_H_
+#ifndef PPAPI_THUNK_PPB_PLUGIN_PRIVATE_FILE_SYSTEM_API_H_
+#define PPAPI_THUNK_PPB_PLUGIN_PRIVATE_FILE_SYSTEM_API_H_
 
 #include "base/memory/ref_counted.h"
 #include "ppapi/shared_impl/singleton_resource_id.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace thunk {
 
-class PPAPI_THUNK_EXPORT PPB_Ext_CrxFileSystem_Private_API {
+class PPAPI_THUNK_EXPORT PPB_PluginPrivateFileSystem_Private_API {
  public:
-  virtual ~PPB_Ext_CrxFileSystem_Private_API() {}
+  virtual ~PPB_PluginPrivateFileSystem_Private_API() {}
 
   virtual int32_t Open(PP_Instance instance,
                        PP_Resource* file_system,
                        scoped_refptr<TrackedCallback> callback) = 0;
 
   static const SingletonResourceID kSingletonResourceID =
-      CRX_FILESYSTEM_SINGLETON_ID;
+      PLUGIN_PRIVATE_FILE_SYSTEM_SINGLETON_ID;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
-#endif  // PPAPI_THUNK_PPB_EXT_CRX_FILE_SYSTEM_API_H_
+#endif  // PPAPI_THUNK_PPB_PLUGIN_PRIVATE_FILE_SYSTEM_API_H_