Refactor FileSystem

ppapi/thunk/resource_creation_api.h

 // Copyright (c) 2012 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_RESOURCE_CREATION_API_H_
 #define PPAPI_THUNK_RESOURCE_CREATION_API_H_
 
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
@@ skipping 28 matching lines @@
 // API", meaning all calls are routed on a per-resource-object basis. The
 // creation functions are not per-object (since there's no object during
 // creation) so need functional routing based on the instance ID.
 class ResourceCreationAPI {
  public:
   virtual ~ResourceCreationAPI() {}
 
   virtual PP_Resource CreateDirectoryReader(PP_Instance instance,
                                             PP_Resource directory_ref) = 0;
   virtual PP_Resource CreateFileIO(PP_Instance instance) = 0;
-  virtual PP_Resource CreateFileRef(PP_Resource file_system,
+  virtual PP_Resource CreateFileRef(PP_Instance instance,
+                                    PP_Resource file_system,
                                     const char* path) = 0;
   virtual PP_Resource CreateFileSystem(PP_Instance instance,
                                        PP_FileSystemType type) = 0;
   virtual PP_Resource CreateIMEInputEvent(PP_Instance instance,
                                           PP_InputEvent_Type type,
                                           PP_TimeTicks time_stamp,
                                           struct PP_Var text,
                                           uint32_t segment_number,
                                           const uint32_t* segment_offsets,
                                           int32_t target_segment,
@@ skipping 110 matching lines @@
       PP_VideoDecoder_Profile profile) = 0;
 #endif  // !defined(OS_NACL)
 
   static const ApiID kApiID = API_ID_RESOURCE_CREATION;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_RESOURCE_CREATION_API_H_