Enabling access notifications for login wizard

chrome/browser/chromeos/login/user_image_view.h

 // Copyright (c) 2010 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 CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_VIEW_H_
 #pragma once
 
 #include "views/controls/button/button.h"
 #include "views/view.h"
@@ skipping 34 matching lines @@
 
   // Updates image from camera.
   void UpdateVideoFrame(const SkBitmap& frame);
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize();
 
   // Overridden from views::ButtonListener.
   virtual void ButtonPressed(views::Button* sender, const views::Event& event);
 
+ protected:
+  // views::View overrides:
+  virtual void ViewHierarchyChanged(bool is_add,
+                                    views::View* parent,
+                                    views::View* child);
+
  private:
   // Initializes layout manager for this view.
   void InitLayout();
 
   views::Label* title_label_;
   views::NativeButton* ok_button_;
   views::NativeButton* skip_button_;
   views::ImageButton* snapshot_button_;
   views::ImageView* user_image_;
 
   // Notifications receiver.
   Delegate* delegate_;
 
   // Indicates that we're in capturing mode. When |false|, new video frames
   // are not shown to user if received.
   bool is_capturing_;
 
   // Last frame that was received from the camera in its original resolution.
   scoped_ptr<SkBitmap> last_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(UserImageView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_VIEW_H_