aura-mus: wire up drag and drop.

services/ui/ws/drag_controller.h

Index: services/ui/ws/drag_controller.h
diff --git a/services/ui/ws/drag_controller.h b/services/ui/ws/drag_controller.h
index cb402829e82c19586b25638a94f06ed4c3e016e5..edbc11a703532f1ab877acb864746b496cca6c36 100644
--- a/services/ui/ws/drag_controller.h
+++ b/services/ui/ws/drag_controller.h
@@ -111,6 +111,8 @@ class DragController : public ServerWindowObserver {
   // ServerWindowObserver:
   void OnWindowDestroying(ServerWindow* window) override;
 
+  static std::string ToString(OperationType type);

[sky, 2017/03/10 21:00:57]

Move to anonymous namespace in drag_controller.cc

[Elliot Glaysher, 2017/03/10 21:30:07]

I can't do this because OperationType is a private implementation detail of
DragController. I'd need to make it public to do this, and I'd prefer not to.

+
   // Our owner.
   DragSource* source_;