Switch to standard integer types in ipc/.

ipc/ipc_platform_file.cc

 // 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.
 
+#include "build/build_config.h"
 #include "ipc/ipc_platform_file.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 #endif
 
 namespace IPC {
 
 PlatformFileForTransit GetFileHandleForProcess(base::PlatformFile handle,
                                                base::ProcessHandle process,
@@ skipping 29 matching lines @@
 #endif
   return out_handle;
 }
 
 PlatformFileForTransit TakeFileHandleForProcess(base::File file,
                                                 base::ProcessHandle process) {
   return GetFileHandleForProcess(file.TakePlatformFile(), process, true);
 }
 
 }  // namespace IPC