Fix base::CPU detection.

base/time_win_unittest.cc

 // Copyright (c) 2011 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 <windows.h>
 #include <mmsystem.h>
 #include <process.h>
 
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
@@ skipping 211 matching lines @@
     // monotonically, making our measurement less realistic.
     base::PlatformThread::Sleep(
         base::TimeDelta::FromMilliseconds((i % 2 == 0) ? 1 : 2));
 
     total_drift += drift_microseconds;
   }
 
   // Sanity check. We expect some time drift to occur, especially across
   // the number of iterations we do. However, if the QPC is disabled, this
   // is not measuring anything (drift is zero in that case).
-  EXPECT_LT(0, total_drift);
+  if (TimeTicks::IsHighResClockWorking())
+    EXPECT_LT(0, total_drift);

[jar (doing other things), 2012/03/28 18:46:56]

This seems like a high-risk flaky test.

In addition, why don't we just bail at the start of the test when we don't have
a HighResClock?

 
   printf("average time drift in microseconds: %lld\n",
          total_drift / kIterations);
 }