Add UMA for High Resolution Timer Usage

base/timer/hi_res_timer_manager_posix.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"
 
 // On POSIX we don't need to do anything special with the system timer.
 
 namespace base {
 
 HighResolutionTimerManager::HighResolutionTimerManager()
     : hi_res_clock_available_(false) {
 }
 
 HighResolutionTimerManager::~HighResolutionTimerManager() {
 }
 
 void HighResolutionTimerManager::OnPowerStateChange(bool on_battery_power) {
 }
 
+void HighResolutionTimerManager::OnSuspend() {}
+
+void HighResolutionTimerManager::OnResume() {}
+
 void HighResolutionTimerManager::UseHiResClock(bool use) {
 }
 
 }  // namespace base