Switch to standard integer types in ppapi/.

ppapi/proxy/file_ref_resource.cc

 // 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.
 
 #include "ppapi/proxy/file_ref_resource.h"
 
+#include <stddef.h>
+
 #include "base/numerics/safe_conversions.h"
 #include "ppapi/c/pp_directory_entry.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/array_writer.h"
 #include "ppapi/shared_impl/file_ref_util.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var.h"
@@ skipping 242 matching lines @@
   callback->Run(params.result());
 }
 
 bool FileRefResource::uses_internal_paths() const {
   return (create_info_.file_system_type != PP_FILESYSTEMTYPE_EXTERNAL) ||
          !create_info_.internal_path.empty();
 }
 
 }  // namespace proxy
 }  // namespace ppapi