Replace views::Event with ui::Event.

ui/views/examples/widget_example.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 "ui/views/examples/widget_example.h"
 
 #include "base/utf_string_conversions.h"
 #include "ui/views/controls/button/text_button.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/layout_manager.h"
@@ skipping 124 matching lines @@
 
   // Initialize the popup widget with the computed bounds.
   Widget::InitParams params(Widget::InitParams::TYPE_POPUP);
   params.transparent = transparent;
   params.parent_widget = parent->GetWidget();
   params.bounds = gfx::Rect(point.x(), point.y(), 200, 300);
   widget->Init(params);
   InitWidget(widget, transparent);
 }
 
-void WidgetExample::ButtonPressed(Button* sender, const Event& event) {
+void WidgetExample::ButtonPressed(Button* sender, const ui::Event& event) {
   switch (sender->tag()) {
     case POPUP:
       CreatePopup(sender, false);
       break;
     case TRANSPARENT_POPUP:
       CreatePopup(sender, true);
       break;
 #if defined(OS_LINUX)
     case CHILD:
       CreateChild(sender, false);
       break;
     case TRANSPARENT_CHILD:
       CreateChild(sender, true);
       break;
 #endif
     case CLOSE_WIDGET:
       sender->GetWidget()->Close();
       break;
   }
 }
 
 }  // namespace examples
 }  // namespace views