Make SystemMonitor not a Singleton and move it out of base

views/widget/widget_win.cc

 // Copyright (c) 2009 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 "views/widget/widget_win.h"
 
 #include "app/gfx/canvas.h"
 #include "app/gfx/native_theme_win.h"
 #include "app/gfx/path.h"
 #include "app/l10n_util_win.h"
+#include "app/system_monitor.h"
 #include "app/win_util.h"
 #include "base/string_util.h"
 #include "base/win_util.h"
 #include "views/accessibility/view_accessibility.h"
 #include "views/controls/native_control_win.h"
 #include "views/focus/focus_util_win.h"
 #include "views/views_delegate.h"
 #include "views/widget/aero_tooltip_manager.h"
 #include "views/widget/default_theme_provider.h"
 #include "views/widget/drop_target_win.h"
@@ skipping 742 matching lines @@
   }
   SetMsgHandled(FALSE);
   return 0;
 }
 
 void WidgetWin::OnPaint(HDC dc) {
   root_view_->OnPaint(hwnd());
 }
 
 LRESULT WidgetWin::OnPowerBroadcast(DWORD power_event, DWORD data) {
-  base::SystemMonitor* monitor = base::SystemMonitor::Get();
+  SystemMonitor* monitor = SystemMonitor::Get();
   if (monitor)
     monitor->ProcessWmPowerBroadcastMessage(power_event);
   SetMsgHandled(FALSE);
   return 0;
 }
 
 void WidgetWin::OnRButtonDown(UINT flags, const CPoint& point) {
   ProcessMousePressed(point, flags | MK_RBUTTON, false, false);
 }
 
@@ skipping 430 matching lines @@
   }
   return NULL;
 }
 
 // static
 Widget* Widget::GetWidgetFromNativeWindow(gfx::NativeWindow native_window) {
   return Widget::GetWidgetFromNativeView(native_window);
 }
 
 }  // namespace views