Replace views::Event with ui::Event.

ash/system/drive/tray_drive.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/drive/tray_drive.h"
 
 #include <vector>
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
@@ skipping 226 matching lines @@
           gfx::Point(pos_x,
                      pos_y + (child_area.height() - kTopPadding -
                          kBottomPadding -
                          cancel_button_->GetPreferredSize().height())/2),
           cancel_button_->GetPreferredSize());
       cancel_button_->SetBoundsRect(bounds_button.Intersect(child_area));
     }
 
     // views::ButtonListener overrides.
     virtual void ButtonPressed(views::Button* sender,
-                               const views::Event& event) OVERRIDE {
+                               const ui::Event& event) OVERRIDE {
       DCHECK(sender == cancel_button_);
       container_->OnCancelOperation(file_path_);
     }
 
     DriveDetailedView* container_;
     views::ImageView* status_img_;
     views::View* label_container_;
     views::ProgressBar* progress_bar_;
     views::ImageButton* cancel_button_;
     FilePath file_path_;
@@ skipping 178 matching lines @@
 
   if (default_)
     default_->Update(&list);
 
   if (detailed_)
     detailed_->Update(&list);
 }
 
 }  // namespace internal
 }  // namespace ash