ipc: Create AttachmentBrokerPrivileged and AttachmentBrokerUnprivileged.

ipc/attachment_broker_win.cc

-// Copyright 2015 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 "ipc/attachment_broker_win.h"
-
-#include "base/process/process.h"
-#include "ipc/attachment_broker_messages.h"
-#include "ipc/brokerable_attachment.h"
-#include "ipc/handle_attachment_win.h"
-#include "ipc/ipc_sender.h"
-
-namespace IPC {
-
-AttachmentBrokerWin::AttachmentBrokerWin() {
-}
-
-AttachmentBrokerWin::~AttachmentBrokerWin() {
-}
-
-bool AttachmentBrokerWin::SendAttachmentToProcess(
-    const BrokerableAttachment* attachment,
-    base::ProcessId destination_process) {
-  switch (attachment->GetBrokerableType()) {
-    case BrokerableAttachment::WIN_HANDLE:
-      const internal::HandleAttachmentWin* handle_attachment =
-          static_cast<const internal::HandleAttachmentWin*>(attachment);
-      internal::HandleAttachmentWin::WireFormat format =
-          handle_attachment->GetWireFormat(destination_process);
-      return sender_->Send(new AttachmentBrokerMsg_DuplicateWinHandle(format));
-  }
-  return false;
-}
-
-bool AttachmentBrokerWin::OnMessageReceived(const Message& msg) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(AttachmentBrokerWin, msg)
-    IPC_MESSAGE_HANDLER(AttachmentBrokerMsg_WinHandleHasBeenDuplicated,
-                        OnWinHandleHasBeenDuplicated)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void AttachmentBrokerWin::OnWinHandleHasBeenDuplicated(
-    const IPC::internal::HandleAttachmentWin::WireFormat& wire_format) {
-  // The IPC message was intended for a different process. Ignore it.
-  if (wire_format.destination_process != base::Process::Current().Pid())
-    return;
-
-  scoped_refptr<BrokerableAttachment> attachment(
-      new IPC::internal::HandleAttachmentWin(wire_format));
-  HandleReceivedAttachment(attachment);
-}
-
-}  // namespace IPC