Use a direct include of time headers in base/, part 2.

base/power_monitor/power_monitor.h

 // Copyright 2013 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 BASE_POWER_MONITOR_POWER_MONITOR_H_
 #define BASE_POWER_MONITOR_POWER_MONITOR_H_
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list_threadsafe.h"
 #include "base/power_monitor/power_observer.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 
 // Windows HiRes timers drain the battery faster so we need to know the battery
 // status.  This isn't true for other platforms.
 #define ENABLE_BATTERY_MONITORING 1
 #else
 #undef ENABLE_BATTERY_MONITORING
 #endif  // !OS_WIN
 
 #if defined(ENABLE_BATTERY_MONITORING)
-#include "base/timer.h"
+#include "base/timer/timer.h"
 #endif  // defined(ENABLE_BATTERY_MONITORING)
 
 #if defined(OS_IOS)
 #include <objc/runtime.h>
 #endif  // OS_IOS
 
 namespace base {
 
 // A class used to monitor the power state change and notify the observers about
 // the change event.
@@ skipping 101 matching lines @@
 #if defined(OS_WIN)
   PowerMessageWindow power_message_window_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PowerMonitor);
 };
 
 }  // namespace base
 
 #endif  // BASE_POWER_MONITOR_POWER_MONITOR_H_