Prevent chrome extension URL overrides from applying in incognito mode.

chrome/browser/extensions/extension_dom_ui.cc

Index: chrome/browser/extensions/extension_dom_ui.cc
diff --git a/chrome/browser/extensions/extension_dom_ui.cc b/chrome/browser/extensions/extension_dom_ui.cc
index b553b85d7d55bf345b29a04c93ca04e17a12bf82..4776e9c8a61d91beb4e356ebaa0da39141c624f5 100644
--- a/chrome/browser/extensions/extension_dom_ui.cc
+++ b/chrome/browser/extensions/extension_dom_ui.cc
@@ -163,10 +163,8 @@ bool ExtensionDOMUI::HandleChromeURLOverride(GURL* url, Profile* profile) {
   if (!url->SchemeIs(chrome::kChromeUIScheme))
     return false;
 
-  // Even when the extensions service is enabled by default, it's still
-  // disabled in incognito mode.
-  ExtensionsService* service = profile->GetExtensionsService();
-  if (!service)
+  // We can't handle chrome-extension URLs in incognito mode.
+  if (profile->IsOffTheRecord())
     return false;
 
   const DictionaryValue* overrides =
@@ -176,6 +174,7 @@ bool ExtensionDOMUI::HandleChromeURLOverride(GURL* url, Profile* profile) {
   if (!overrides || !overrides->GetList(UTF8ToWide(page), &url_list))
     return false;
 
+  ExtensionsService* service = profile->GetExtensionsService();
   if (!service->is_ready()) {
     // TODO(erikkay) So far, it looks like extensions load before the new tab
     // page.  I don't know if we have anything that enforces this, so add this