Update ppapi to not use linked_ptr or ScopedVector

ppapi/thunk/ppb_file_ref_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_PPB_FILE_REF_API_H_
 #define PPAPI_THUNK_PPB_FILE_REF_API_H_
 
 #include <stdint.h>
 
 #include <vector>
 
-#include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/ppb_file_ref.h"
 #include "ppapi/shared_impl/file_ref_create_info.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
 
 struct FileRefCreateInfo;
 class TrackedCallback;
 
@@ skipping 26 matching lines @@
   virtual const FileRefCreateInfo& GetCreateInfo() const = 0;
 
   // Private API
   virtual PP_Var GetAbsolutePath() = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_PPB_FILE_REF_API_H_