Use ui::Event instead of mojom::EventPtr in mash/wm.

mash/wm/window_manager.h

 // Copyright 2015 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.
 
 #ifndef MASH_WM_WINDOW_MANAGER_H_
 #define MASH_WM_WINDOW_MANAGER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 35 matching lines @@
   void OnWindowEmbeddedAppDisconnected(mus::Window* window) override;
 
   // WindowManagerDelegate:
   void SetWindowManagerClient(mus::WindowManagerClient* client) override;
   bool OnWmSetBounds(mus::Window* window, gfx::Rect* bounds) override;
   bool OnWmSetProperty(mus::Window* window,
                        const std::string& name,
                        scoped_ptr<std::vector<uint8_t>>* new_data) override;
   mus::Window* OnWmCreateTopLevelWindow(
       std::map<std::string, std::vector<uint8_t>>* properties) override;
-  void OnAccelerator(uint32_t id, mus::mojom::EventPtr event) override;
+  void OnAccelerator(uint32_t id, const ui::Event& event) override;
 
   // mash::shell::mojom::ScreenlockStateListener:
   void ScreenlockStateChanged(bool locked) override;
 
   RootWindowController* root_controller_;
   mus::WindowManagerClient* window_manager_client_;
 
   mojo::Binding<mash::shell::mojom::ScreenlockStateListener> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace wm
 }  // namespace mash
 
 #endif  // MASH_WM_WINDOW_MANAGER_H_