Revert of Switch to standard integer types in sandbox/.

sandbox/win/src/win2k_threadpool.h

 // 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.
 
 #ifndef SANDBOX_SRC_WIN2K_THREADPOOL_H_
 #define SANDBOX_SRC_WIN2K_THREADPOOL_H_
 
-#include <stddef.h>
-
+#include <list>
 #include <algorithm>
-#include <list>
-#include "base/macros.h"
 #include "sandbox/win/src/crosscall_server.h"
 
 namespace sandbox {
 
 // Win2kThreadPool a simple implementation of a thread provider as required
 // for the sandbox IPC subsystem. See sandbox\crosscall_server.h for the details
 // and requirements of this interface.
 //
 // Implementing the thread provider as a thread pool is desirable in the case
 // of shared memory IPC because it can generate a large number of waitable
@@ skipping 29 matching lines @@
   PoolObjects pool_objects_;
   // This lock protects the list of pool wait objects.
   CRITICAL_SECTION lock_;
 
   DISALLOW_COPY_AND_ASSIGN(Win2kThreadPool);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_SRC_WIN2K_THREADPOOL_H_