Rework the way Widget::Init works:

chrome/browser/chromeos/login/message_bubble.h

 // Copyright (c) 2011 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_MESSAGE_BUBBLE_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MESSAGE_BUBBLE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 59 matching lines @@
                              const views::Event& event);
 
   // Overridden from views::LinkListener:
   virtual void LinkClicked(views::Link* source, int event_flags) OVERRIDE;
 
   // Overridden from WidgetGtk.
   virtual void IsActiveChanged();
   virtual void SetMouseCapture();
 
  private:
-  MessageBubble(views::WidgetGtk::Type type,
+  MessageBubble(views::Widget::CreateParams::Type type,
                 views::Widget* parent,
                 SkBitmap* image,
                 const std::wstring& text,
                 const std::wstring& help,
                 bool grab_enabled,
                 MessageBubbleDelegate* delegate);
 
   views::Widget* parent_;
   views::ImageView* icon_;
   views::Label* text_;
   views::ImageButton* close_button_;
   views::Link* help_link_;
   MessageBubbleDelegate* message_delegate_;
   bool grab_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBubble);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MESSAGE_BUBBLE_H_