Rename HandleConverter to NaClMessageScanner.

ppapi/proxy/handle_converter.h

-// Copyright (c) 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_HANDLE_CONVERTER_H_
-#define PPAPI_PROXY_HANDLE_CONVERTER_H_
-
-#include <map>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "ppapi/proxy/ppapi_proxy_export.h"
-
-namespace IPC {
-class Message;
-}
-
-namespace ppapi {
-namespace proxy {
-
-class SerializedHandle;
-
-class PPAPI_PROXY_EXPORT HandleConverter {
- public:
-  HandleConverter();
-
-  // Convert the native handles in |msg| to NaCl style.
-  // In some cases (e.g., Windows), we need to re-write the contents of the
-  // message; in those cases, |new_msg_ptr| will be set to the new message.
-  // If |msg| is already in a good form for NaCl, |new_msg_ptr| is left NULL.
-  // See the explanation in the body of the method.
-  //
-  // In either case, all the handles in |msg| are extracted into |handles| so
-  // that they can be converted to NaClDesc handles.
-  // See chrome/nacl/nacl_ipc_adapter.cc for where this gets used.
-  bool ConvertNativeHandlesToPosix(const IPC::Message& msg,
-                                   std::vector<SerializedHandle>* handles,
-                                   scoped_ptr<IPC::Message>* new_msg_ptr);
-
-  // This method informs HandleConverter that a sync message is being sent so
-  // that it can associate reply messages with their type.
-  //
-  // Users of HandleConverter must call this when they send a synchronous
-  // message, otherwise HandleConverter won't be able to convert handles in
-  // replies.
-  void RegisterSyncMessageForReply(const IPC::Message& msg);
-
- private:
-  // When we send a synchronous message (from untrusted to trusted), we store
-  // its type here, so that later we can associate the reply with its type
-  // and potentially translate handles in the message.
-  typedef std::map<int, uint32> PendingSyncMsgMap;
-  PendingSyncMsgMap pending_sync_msgs_;
-
-  DISALLOW_COPY_AND_ASSIGN(HandleConverter);
-};
-
-}  // namespace proxy
-}  // namespace ppapi
-
-#endif  // PPAPI_PROXY_HANDLE_CONVERTER_H_