Move platform_thread to base/threading and put in the base namespace. I left ...

base/spin_wait.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
 // This file provides a macro ONLY for use in testing.
 // DO NOT USE IN PRODUCTION CODE.  There are much better ways to wait.
 
 // This code is very helpful in testing multi-threaded code, without depending
 // on almost any primitives.  This is especially helpful if you are testing
 // those primitive multi-threaded constructs.
 
 // We provide a simple one argument spin wait (for 1 second), and a generic
 // spin wait (for longer periods of time).
 
-#ifndef BASE_SPIN_WAIT_H__
-#define BASE_SPIN_WAIT_H__
+#ifndef BASE_SPIN_WAIT_H_
+#define BASE_SPIN_WAIT_H_
 #pragma once
 
-#include "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 #include "base/time.h"
 
 // Provide a macro that will wait no longer than 1 second for an asynchronous
 // change is the value of an expression.
 // A typical use would be:
 //
 //   SPIN_FOR_1_SECOND_OR_UNTIL_TRUE(0 == f(x));
 //
 // The expression will be evaluated repeatedly until it is true, or until
 // the time (1 second) expires.
 // Since tests generally have a 5 second watch dog timer, this spin loop is
 // typically used to get the padding needed on a given test platform to assure
 // that the test passes, even if load varies, and external events vary.
 
 #define SPIN_FOR_1_SECOND_OR_UNTIL_TRUE(expression) \
     SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(base::TimeDelta::FromSeconds(1), \
                                      (expression))
 
 #define SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(delta, expression) do { \
   base::TimeTicks start = base::TimeTicks::Now(); \
   const base::TimeDelta kTimeout = delta; \
     while (!(expression)) { \
       if (kTimeout < base::TimeTicks::Now() - start) { \
       EXPECT_LE((base::TimeTicks::Now() - start).InMilliseconds(), \
                 kTimeout.InMilliseconds()) << "Timed out"; \
         break; \
       } \
-      PlatformThread::Sleep(50); \
+      base::PlatformThread::Sleep(50); \
     } \
   } while (0)
 
-#endif  // BASE_SPIN_WAIT_H__
+#endif  // BASE_SPIN_WAIT_H_