Refactor menu controller to isolate aura dependency.

ui/views/widget/widget.h

Index: ui/views/widget/widget.h
diff --git a/ui/views/widget/widget.h b/ui/views/widget/widget.h
index 87f702dde0eb1e8563b411c38965035bfb42ce4d..609a2e1329b64598aa2710d561bc0dc6ab2a8531 100644
--- a/ui/views/widget/widget.h
+++ b/ui/views/widget/widget.h
@@ -496,6 +496,9 @@ class VIEWS_EXPORT Widget : public internal::NativeWidgetDelegate,
   // underlying windowing system.
   void SetOpacity(unsigned char opacity);
 
+  // Sets whether a shadow should be drawn around the window.
+  void SetHasShadow(bool has_shadow);

[tapted, 2014/05/06 00:02:46]

Maybe call this `SetHasActivationShadow`?  And borrow some words from the
comment in shadow_controller.h

[Andre, 2014/05/07 23:12:39]

Done.

+
   // Sets whether or not the window should show its frame as a "transient drag
   // frame" - slightly transparent and without the standard window controls.
   void SetUseDragFrame(bool use_drag_frame);