About box auto-update improvements

chrome/browser/cocoa/restart_browser.mm

 // 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 "app/l10n_util_mac.h"
 #import "chrome/browser/cocoa/restart_browser.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/app_strings.h"
 
@@ skipping 35 matching lines @@
   NSString* title =
       l10n_util::GetNSStringFWithFixup(IDS_PLEASE_RESTART_BROWSER,
                                        l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
   NSString* text =
       l10n_util::GetNSStringWithFixup(IDS_OPTIONS_RESTART_REQUIRED);
   NSString* okBtn = l10n_util::GetNSStringWithFixup(IDS_APP_OK);
 
   RestartHelper* helper = [[RestartHelper alloc] init];
 
   NSAlert* alert = [helper alert];
-  [alert setAlertStyle:NSCriticalAlertStyle];
+  [alert setAlertStyle:NSInformationalAlertStyle];
   [alert setMessageText:title];
   [alert setInformativeText:text];
   [alert addButtonWithTitle:okBtn];
 
   [alert beginSheetModalForWindow:parent
                     modalDelegate:helper
                    didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
                       contextInfo:nil];
 }
 
 }  // namespace restart_browser