Replace views::Event with ui::Event.

ash/system/settings/tray_settings.cc

 // Copyright (c) 2012 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 "ash/system/settings/tray_settings.h"
 
 #include "ash/shell.h"
 #include "ash/system/power/power_status_view.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
@@ skipping 52 matching lines @@
   }
 
   virtual ~SettingsDefaultView() {}
 
   void UpdatePowerStatus(const PowerSupplyStatus& status) {
     if (power_status_view_)
       power_status_view_->UpdatePowerStatus(status);
   }
 
   // Overridden from ash::internal::ActionableView.
-  virtual bool PerformAction(const views::Event& event) OVERRIDE {
+  virtual bool PerformAction(const ui::Event& event) OVERRIDE {
     if (login_status_ == user::LOGGED_IN_NONE ||
         login_status_ == user::LOGGED_IN_LOCKED)
       return false;
 
     ash::Shell::GetInstance()->tray_delegate()->ShowSettings();
     return true;
   }
 
   // Overridden from views::View.
   virtual void Layout() OVERRIDE {
@@ skipping 66 matching lines @@
 }
 
 // Overridden from PowerStatusObserver.
 void TraySettings::OnPowerStatusChanged(const PowerSupplyStatus& status) {
   if (default_view_)
     default_view_->UpdatePowerStatus(status);
 }
 
 }  // namespace internal
 }  // namespace ash