Fix ownership bug with ViewObserver::OnViewInputEvent

mojo/examples/window_manager/window_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "mojo/examples/window_manager/window_manager.mojom.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/services/public/cpp/view_manager/view.h"
 #include "mojo/services/public/cpp/view_manager/view_manager.h"
@@ skipping 48 matching lines @@
   }
 
  private:
   // Overridden from Application:
   virtual void Initialize() MOJO_OVERRIDE {
     AddService<WindowManagerConnection>(this);
     ViewManager::Create(this, this);
   }
 
     // 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");
       else if (event->flags & ui::EF_RIGHT_MOUSE_BUTTON)
         CreateWindow("mojo:mojo_nesting_app");
     }
   }
 
   // Overridden from ViewManagerDelegate:
   virtual void OnRootAdded(ViewManager* view_manager,
@@ skipping 38 matching lines @@
   window_manager_->CloseWindow(node_id);
 }
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::WindowManager;
 }
 
-}  // namespace mojo
+}  // namespace mojo