Fix ownership bug with ViewObserver::OnViewInputEvent

mojo/examples/embedded_app/embedded_app.cc

Index: mojo/examples/embedded_app/embedded_app.cc
diff --git a/mojo/examples/embedded_app/embedded_app.cc b/mojo/examples/embedded_app/embedded_app.cc
index 3f463072b62e098f08e683d8316bb56e46657066..4bc2018cf05d0893cd1f4b1046ba5fcc4aeced59 100644
--- a/mojo/examples/embedded_app/embedded_app.cc
+++ b/mojo/examples/embedded_app/embedded_app.cc
@@ -66,7 +66,7 @@ class EmbeddedApp : public Application,
   }
 
   // Overridden from ViewObserver:
-  virtual void OnViewInputEvent(View* view, EventPtr event) OVERRIDE {
+  virtual void OnViewInputEvent(View* view, const EventPtr& event) OVERRIDE {
     if (event->action == ui::ET_MOUSE_RELEASED)
       window_manager_->CloseWindow(view->node()->id());
   }
@@ -94,4 +94,4 @@ Application* Application::Create() {
   return new examples::EmbeddedApp;
 }
 
-}  // namespace mojo
+}  // namespace mojo