SystemMonitor refactoring: move power state monitor into a separate class called PowerMonitor

chrome/browser/system_monitor/removable_device_notifications_mac_unittest.mm

 // 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 "chrome/browser/system_monitor/removable_device_notifications_mac.h"
 
 #include "base/file_util.h"
 #include "base/mac/foundation_util.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 35 matching lines @@
 }  // namespace
 
 class RemovableDeviceNotificationsMacTest : public testing::Test {
  public:
   RemovableDeviceNotificationsMacTest()
       : message_loop_(MessageLoop::TYPE_IO),
         file_thread_(content::BrowserThread::FILE, &message_loop_) {
   }
 
   virtual void SetUp() OVERRIDE {
-    base::SystemMonitor::AllocateSystemIOPorts();
     system_monitor_.reset(new base::SystemMonitor());
 
     mock_devices_changed_observer_.reset(new base::MockDevicesChangedObserver);
     system_monitor_->AddDevicesChangedObserver(
         mock_devices_changed_observer_.get());
 
     notifications_ = new RemovableDeviceNotificationsMac;
 
     unique_id_ = "test_id";
     display_name_ = ASCIIToUTF16("Test Display Name");
@@ skipping 120 matching lines @@
                                          testing::_,
                                          testing::_)).Times(0);
   DiskInfoMac info = CreateDiskInfoMac(
       unique_id_, "Disk Image", display_name_, mount_point_);
   notifications_->UpdateDisk(
       info, RemovableDeviceNotificationsMac::UPDATE_DEVICE_ADDED);
   message_loop_.RunAllPending();
 }
 
 }  // namespace chrome