Attempting to resolve a race condition with PowerMonitor

base/timer/hi_res_timer_manager_unittest.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/timer/hi_res_timer_manager.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/power_monitor/power_monitor_device_source.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 #if defined(OS_WIN)
 // http://crbug.com/114048
 TEST(HiResTimerManagerTest, DISABLED_ToggleOnOff) {
   base::MessageLoop loop;
   scoped_ptr<base::PowerMonitorSource> power_monitor_source(
       new base::PowerMonitorDeviceSource());
-  scoped_ptr<base::PowerMonitor> power_monitor(
-      new base::PowerMonitor(power_monitor_source.Pass()));
+  base::PowerMonitor::Initialize(power_monitor_source.Pass());
   HighResolutionTimerManager manager;
 
   // At this point, we don't know if the high resolution timers are on or off,
   // it depends on what system the tests are running on (for example, if this
   // test is running on a laptop/battery, then the PowerMonitor would have
   // already set the PowerState to battery power; but if we're running on a
   // desktop, then the PowerState will be non-battery power).  Simulate a power
   // level change to get to a deterministic state.
   manager.OnPowerStateChange(/* on_battery */ false);
 
@@ skipping 14 matching lines @@
     EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
 
     // Simulate a off-battery power event.
     manager.OnPowerStateChange(/* on_battery */ false);
     EXPECT_TRUE(manager.hi_res_clock_available());
     EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse());
 
     // De-activate the high resolution timer.
     base::Time::ActivateHighResolutionTimer(false);
   }
+
+  base::PowerMonitor::ShutdownForTesting();
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace base