Adds MUSViewsInit

ui/views/views_delegate.h

Index: ui/views/views_delegate.h
diff --git a/ui/views/views_delegate.h b/ui/views/views_delegate.h
index c881daab09f34eae37173da7ee7d292af26f5fe4..8cb0940fb7f2b4fac904b269116eff0709aa7138 100644
--- a/ui/views/views_delegate.h
+++ b/ui/views/views_delegate.h
@@ -88,6 +88,11 @@ class VIEWS_EXPORT ViewsDelegate {
   // Returns the ViewsDelegate instance if there is one, or nullptr otherwise.
   static ViewsDelegate* GetInstance();
 
+  // Allows the delegate to override creation of the default NativeWidget
+  // implementation used by Widget.
+  virtual NativeWidget* CreateNativeWidget(
+      internal::NativeWidgetDelegate* delegate);
+
   // Saves the position, size and "show" state for the window with the
   // specified name.
   virtual void SaveWindowPlacement(const Widget* widget,