views/mus: Fix showing menu in chrome in mus.

chrome/browser/ui/views/chrome_views_delegate.cc

Index: chrome/browser/ui/views/chrome_views_delegate.cc
diff --git a/chrome/browser/ui/views/chrome_views_delegate.cc b/chrome/browser/ui/views/chrome_views_delegate.cc
index f7637f9d519de24d49764c9a9692c806a675819d..04151fd9b71086611707b5870f9e240519f7b223 100644
--- a/chrome/browser/ui/views/chrome_views_delegate.cc
+++ b/chrome/browser/ui/views/chrome_views_delegate.cc
@@ -64,7 +64,6 @@
 #include "chrome/browser/ui/ash/ash_util.h"
 #endif
 
-
 // Helpers --------------------------------------------------------------------
 
 namespace {
@@ -354,6 +353,11 @@ void ChromeViewsDelegate::OnBeforeWidgetInit(
     }
   }
 #endif  // OS_WIN
+
+  if (!use_non_toplevel_window && !native_widget_factory().is_null()) {
+    params->native_widget = native_widget_factory().Run(*params, delegate);
+    return;
+  }
 #endif  // USE_AURA
 
 #if defined(OS_CHROMEOS)