Move base to DEPS

base/system_monitor/system_monitor.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/system_monitor/system_monitor.h"
-
-#include <utility>
-
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/time/time.h"
-
-namespace base {
-
-static SystemMonitor* g_system_monitor = NULL;
-
-SystemMonitor::SystemMonitor()
-    :  devices_changed_observer_list_(
-          new ObserverListThreadSafe<DevicesChangedObserver>()) {
-  DCHECK(!g_system_monitor);
-  g_system_monitor = this;
-}
-
-SystemMonitor::~SystemMonitor() {
-  DCHECK_EQ(this, g_system_monitor);
-  g_system_monitor = NULL;
-}
-
-// static
-SystemMonitor* SystemMonitor::Get() {
-  return g_system_monitor;
-}
-
-void SystemMonitor::ProcessDevicesChanged(DeviceType device_type) {
-  NotifyDevicesChanged(device_type);
-}
-
-void SystemMonitor::AddDevicesChangedObserver(DevicesChangedObserver* obs) {
-  devices_changed_observer_list_->AddObserver(obs);
-}
-
-void SystemMonitor::RemoveDevicesChangedObserver(DevicesChangedObserver* obs) {
-  devices_changed_observer_list_->RemoveObserver(obs);
-}
-
-void SystemMonitor::NotifyDevicesChanged(DeviceType device_type) {
-  DVLOG(1) << "DevicesChanged with device type " << device_type;
-  devices_changed_observer_list_->Notify(
-      FROM_HERE, &DevicesChangedObserver::OnDevicesChanged, device_type);
-}
-
-}  // namespace base