Get event targetting working for mouse events.

mojo/services/window_manager/window_manager_app.h

Index: mojo/services/window_manager/window_manager_app.h
diff --git a/mojo/services/window_manager/window_manager_app.h b/mojo/services/window_manager/window_manager_app.h
index 96393a1c75099682adbf10e183e6c346396f191e..49d5b36cdbc8d90a22debbfd1e0d27c0cca19032 100644
--- a/mojo/services/window_manager/window_manager_app.h
+++ b/mojo/services/window_manager/window_manager_app.h
@@ -55,9 +55,6 @@ class WindowManagerApp : public ApplicationDelegate,
                    WindowManagerDelegate* window_manager_delegate);
   ~WindowManagerApp() override;
 
-  static View* GetViewForViewTarget(ViewTarget* view);
-  ViewTarget* GetViewTargetForViewId(Id view);
-
   mojo::ViewEventDispatcher* event_dispatcher() {
     return view_event_dispatcher_.get();
   }
@@ -102,7 +99,7 @@ class WindowManagerApp : public ApplicationDelegate,
   // and adds to the registry so that it can be retrieved later via
   // GetViewTargetForViewId().
   // TODO(beng): perhaps View should have a property bag.
-  void RegisterSubtree(View* view, ViewTarget* parent);
+  void RegisterSubtree(View* view);
 
   // Recursively invokes Unregister() for |view| and all its descendants.
   void UnregisterSubtree(View* view);
@@ -121,9 +118,6 @@ class WindowManagerApp : public ApplicationDelegate,
   // Overridden from ViewObserver:
   void OnTreeChanged(const ViewObserver::TreeChangeParams& params) override;
   void OnViewDestroying(View* view) override;
-  void OnViewBoundsChanged(View* view,
-                           const Rect& old_bounds,
-                           const Rect& new_bounds) override;
 
   // Overridden from ui::EventHandler:
   void OnEvent(ui::Event* event) override;