Replace views::Event with ui::Event.

ash/system/date/tray_date.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/date/tray_date.h"
 
 #include "ash/shell.h"
 #include "ash/system/date/date_view.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 83 matching lines @@
         view->AddButton(lock_);
       }
     }
   }
 
   virtual ~DateDefaultView() {}
 
  private:
   // Overridden from views::ButtonListener.
   virtual void ButtonPressed(views::Button* sender,
-                             const views::Event& event) OVERRIDE {
+                             const ui::Event& event) OVERRIDE {
     ash::SystemTrayDelegate* tray = ash::Shell::GetInstance()->tray_delegate();
     if (sender == help_)
       tray->ShowHelp();
     else if (sender == shutdown_)
       tray->ShutDown();
     else if (sender == lock_)
       tray->RequestLockScreen();
     else
       NOTREACHED();
   }
@@ skipping 63 matching lines @@
     time_tray_->UpdateTimeFormat();
 }
 
 void TrayDate::Refresh() {
   if (time_tray_)
     time_tray_->UpdateText();
 }
 
 }  // namespace internal
 }  // namespace ash