Refactor menu controller to isolate aura dependency.

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index 2e564fa5a8adff1bee71a001e83c5405ad073619..702c6cabee4e52f2e001a0c2e8b1fdb51ad28fd5 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -36,6 +36,7 @@
 #include "ui/views/widget/widget_aura_utils.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/views/widget/window_reorderer.h"
+#include "ui/wm/core/shadow_types.h"
 #include "ui/wm/core/window_util.h"
 #include "ui/wm/public/activation_client.h"
 #include "ui/wm/public/drag_drop_client.h"
@@ -588,6 +589,11 @@ void NativeWidgetAura::SetOpacity(unsigned char opacity) {
     window_->layer()->SetOpacity(opacity / 255.0);
 }
 
+void NativeWidgetAura::SetHasActivationShadow(bool has_shadow) {
+  SetShadowType(window_, has_shadow ? wm::SHADOW_TYPE_RECTANGULAR
+                                    : wm::SHADOW_TYPE_NONE);
+}
+
 void NativeWidgetAura::SetUseDragFrame(bool use_drag_frame) {
   NOTIMPLEMENTED();
 }