Deleted OS_WIN and all Windows specific files from base.

base/timer/hi_res_timer_manager_win.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 "base/timer/hi_res_timer_manager.h"
-
-#include "base/power_monitor/power_monitor.h"
-#include "base/time/time.h"
-
-namespace base {
-
-HighResolutionTimerManager::HighResolutionTimerManager()
-    : hi_res_clock_available_(false) {
-  base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
-  DCHECK(power_monitor != NULL);
-  power_monitor->AddObserver(this);
-  UseHiResClock(!power_monitor->IsOnBatteryPower());
-}
-
-HighResolutionTimerManager::~HighResolutionTimerManager() {
-  base::PowerMonitor::Get()->RemoveObserver(this);
-  UseHiResClock(false);
-}
-
-void HighResolutionTimerManager::OnPowerStateChange(bool on_battery_power) {
-  UseHiResClock(!on_battery_power);
-}
-
-void HighResolutionTimerManager::UseHiResClock(bool use) {
-  if (use == hi_res_clock_available_)
-    return;
-  hi_res_clock_available_ = use;
-  base::Time::EnableHighResolutionTimer(use);
-}
-
-}  // namespace base