Update WebUILogin Focus for Mash

chrome/browser/chromeos/login/ui/webui_login_view.cc

Index: chrome/browser/chromeos/login/ui/webui_login_view.cc
diff --git a/chrome/browser/chromeos/login/ui/webui_login_view.cc b/chrome/browser/chromeos/login/ui/webui_login_view.cc
index e5ce8aaa1d69ab3bfac21275e6db462321c4ea75..266a18b89489945310157abd49b497e58ea6aa15 100644
--- a/chrome/browser/chromeos/login/ui/webui_login_view.cc
+++ b/chrome/browser/chromeos/login/ui/webui_login_view.cc
@@ -355,6 +355,10 @@ void WebUILoginView::LoadURL(const GURL & url) {
       ->GetView()
       ->SetBackgroundColor(SK_ColorTRANSPARENT);
 
+  // There is no Shell instance while running in mash.
+  if (chrome::IsRunningInMash())
+    return;
+
   ash::StatusAreaWidgetDelegate* status_area_widget_delegate =
       GetStatusAreaWidgetDelegate();
   DCHECK(status_area_widget_delegate);