Added the SuppressUnsupportedOSWarning policy setting.

chrome/browser/ui/startup/obsolete_system_infobar_delegate.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/ui/startup/obsolete_system_infobar_delegate.h"
 
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/obsolete_system/obsolete_system.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
 #include "components/infobars/core/infobar.h"
+#include "components/prefs/pref_service.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 // static
 void ObsoleteSystemInfoBarDelegate::Create(InfoBarService* infobar_service) {
+  PrefService* local_state = g_browser_process->local_state();
+  if (local_state &&
+      local_state->GetBoolean(prefs::kSuppressUnsupportedOSWarning)) {
+    return;
+  }
   if (!ObsoleteSystem::IsObsoleteNowOrSoon())
     return;
   infobar_service->AddInfoBar(infobar_service->CreateConfirmInfoBar(
       scoped_ptr<ConfirmInfoBarDelegate>(new ObsoleteSystemInfoBarDelegate())));
 }
 
 ObsoleteSystemInfoBarDelegate::ObsoleteSystemInfoBarDelegate()
     : ConfirmInfoBarDelegate() {
 }
 
@@ skipping 13 matching lines @@
   return BUTTON_NONE;
 }
 
 base::string16 ObsoleteSystemInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 GURL ObsoleteSystemInfoBarDelegate::GetLinkURL() const {
   return GURL(ObsoleteSystem::GetLinkURL());
 }