Clean up a few more unused globals.

chrome/browser/extensions/api/system_private/system_private_api.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 "chrome/browser/extensions/api/system_private/system_private_api.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/event_router_forwarder.h"
@@ skipping 21 matching lines @@
 // Property keys.
 const char kBrightnessKey[] = "brightness";
 const char kDownloadProgressKey[] = "downloadProgress";
 const char kIsVolumeMutedKey[] = "isVolumeMuted";
 const char kStateKey[] = "state";
 const char kUserInitiatedKey[] = "userInitiated";
 const char kVolumeKey[] = "volume";
 
 // System update states.
 const char kNotAvailableState[] = "NotAvailable";
+const char kNeedRestartState[] = "NeedRestart";
+
+#if defined(OS_CHROMEOS)
 const char kUpdatingState[] = "Updating";
-const char kNeedRestartState[] = "NeedRestart";
+#endif  // defined(OS_CHROMEOS)
 
 // Dispatches an extension event with |argument|
 void DispatchEvent(const std::string& event_name, base::Value* argument) {
   scoped_ptr<base::ListValue> list_args(new base::ListValue());
   if (argument) {
     list_args->Append(argument);
   }
   g_browser_process->extension_event_router_forwarder()->
       BroadcastEventToRenderers(event_name, list_args.Pass(), GURL());
 }
@@ skipping 91 matching lines @@
 
 void DispatchScreenUnlockedEvent() {
   DispatchEvent(system_private::OnScreenUnlocked::kEventName, NULL);
 }
 
 void DispatchWokeUpEvent() {
   DispatchEvent(system_private::OnWokeUp::kEventName, NULL);
 }
 
 }  // namespace extensions