Fix ownership bug with ViewObserver::OnViewInputEvent

mojo/examples/window_manager/window_manager.cc

Index: mojo/examples/window_manager/window_manager.cc
diff --git a/mojo/examples/window_manager/window_manager.cc b/mojo/examples/window_manager/window_manager.cc
index 255a962a12bedd1f9978c0e485721d04dbe4aa4e..55117df96a624e9384097535ea78f71ef2c2d3aa 100644
--- a/mojo/examples/window_manager/window_manager.cc
+++ b/mojo/examples/window_manager/window_manager.cc
@@ -66,7 +66,7 @@ class WindowManager : 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) {
       if (event->flags & ui::EF_LEFT_MOUSE_BUTTON)
         CreateWindow("mojo:mojo_embedded_app");
@@ -125,4 +125,4 @@ Application* Application::Create() {
   return new examples::WindowManager;
 }
 
-}  // namespace mojo
+}  // namespace mojo