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 0d383adc522fba0895a7d3c4ee7cdb1a7d88d776..594aff5de5eea1ded1a9ff9553da190d379374cf 100644
--- a/ui/views/widget/widget.h
+++ b/ui/views/widget/widget.h
@@ -497,6 +497,10 @@ class VIEWS_EXPORT Widget : public internal::NativeWidgetDelegate,
   // underlying windowing system.
   void SetOpacity(unsigned char opacity);
 
+  // Informs the window manager whether to create a rectangular shadow around
+  // the window, and keep it updated in response to activation changes.
+  void SetHasActivationShadow(bool has_shadow);
+
   // 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);