Add DeviceSettingProvider unit tests.

chrome/browser/ui/options/options_util.cc

Index: chrome/browser/ui/options/options_util.cc
diff --git a/chrome/browser/ui/options/options_util.cc b/chrome/browser/ui/options/options_util.cc
index 733d65e4ca75a16bf6df79071c14b97737f019ba..ea769932d88f3699b9810efbca774e67ec05e7e0 100644
--- a/chrome/browser/ui/options/options_util.cc
+++ b/chrome/browser/ui/options/options_util.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -26,7 +26,6 @@ bool OptionsUtil::ResolveMetricsReportingEnabled(bool enabled) {
   enabled = update_pref;
 
   MetricsService* metrics = g_browser_process->metrics_service();
-  DCHECK(metrics);
   if (metrics) {
     if (enabled)
       metrics->Start();