Refactor FileSystem

ppapi/shared_impl/ppb_file_ref_shared.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_SHARED_IMPL_PPB_FILE_REF_SHARED_H_
 #define PPAPI_SHARED_IMPL_PPB_FILE_REF_SHARED_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_file_ref_api.h"
 
 namespace ppapi {
 
 class StringVar;
 
 // FileRefs are created in a number of places and they include a number of
 // return values. This struct encapsulates everything in one place.
 struct PPB_FileRef_CreateInfo {
   PPB_FileRef_CreateInfo() : file_system_type(PP_FILESYSTEMTYPE_EXTERNAL) {}
 
   ppapi::HostResource resource;
   int file_system_type;  // One of PP_FileSystemType values.
   std::string path;
   std::string name;
+
+  // Since FileRef needs to hold a FileSystem reference, we need to pass the
+  // resource in this CreateInfo.  Note that this is a plugin resource as
+  // FileSystem is already in new design.
+  PP_Resource file_system_plugin_resource;
 };
 
 // This class provides the shared implementation of a FileRef. The functions
 // that actually "do stuff" like Touch and MakeDirectory are implemented
 // differently for the proxied and non-proxied derived classes.
 class PPAPI_SHARED_EXPORT PPB_FileRef_Shared
     : public Resource,
       public thunk::PPB_FileRef_API {
  public:
   PPB_FileRef_Shared(ResourceObjectType type,
@@ skipping 17 matching lines @@
   // return the identical string object every time they're requested.
   mutable scoped_refptr<StringVar> name_var_;
   mutable scoped_refptr<StringVar> path_var_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PPB_FileRef_Shared);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPB_FILE_REF_SHARED_H_