Convert //ppapi to use std::unique_ptr

ppapi/proxy/file_ref_resource.h

 // 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_PROXY_FILE_REF_RESOURCE_H_
 #define PPAPI_PROXY_FILE_REF_RESOURCE_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/file_ref_create_info.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/thunk/ppb_file_ref_api.h"
 
 namespace ppapi {
@@ skipping 71 matching lines @@
   scoped_refptr<StringVar> path_var_;
   scoped_refptr<StringVar> absolute_path_var_;
 
   DISALLOW_COPY_AND_ASSIGN(FileRefResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_FILE_REF_RESOURCE_H_