Switch to standard integer types in base/files/.

base/files/file_path_watcher_kqueue.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 "base/files/file_path_watcher_kqueue.h"
 
 #include <fcntl.h>
+#include <stddef.h>
 #include <sys/param.h>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 
 // On some platforms these are not defined.
 #if !defined(EV_RECEIPT)
@@ skipping 363 matching lines @@
     kqueue_ = -1;
     std::for_each(events_.begin(), events_.end(), ReleaseEvent);
     events_.clear();
     io_task_runner_ = NULL;
     MessageLoop::current()->RemoveDestructionObserver(this);
     callback_.Reset();
   }
 }
 
 }  // namespace base