Make SystemMonitor not a Singleton and move it out of base

app/system_monitor_win.cc

Index: app/system_monitor_win.cc
diff --git a/base/system_monitor_win.cc b/app/system_monitor_win.cc
similarity index 92%
rename from base/system_monitor_win.cc
rename to app/system_monitor_win.cc
index 8a2d8c96184a2203c3a7768c9171314df7492c3c..c9347dc45e69db07d62198e4bb87560f8573efc6 100644
--- a/base/system_monitor_win.cc
+++ b/app/system_monitor_win.cc
@@ -1,10 +1,8 @@
-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// 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 "base/system_monitor.h"
-
-namespace base {
+#include "app/system_monitor.h"
 
 void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id) {
   PowerEvent power_event;
@@ -46,7 +44,3 @@ bool SystemMonitor::IsBatteryPower() {
   }
   return (status.ACLineStatus == 0);
 }
-
-
-
-} // namespace base