Convert GetPreferredSize from:...

chrome/views/separator.h

 // Copyright (c) 2006-2008 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_VIEWS_SEPARATOR_H__
 #define CHROME_VIEWS_SEPARATOR_H__
 
 #include "chrome/views/native_control.h"
 
 namespace ChromeViews {
 
 // The Separator class is a view that shows a line used to visually separate
 // other views.  The current implementation is only horizontal.
 
 class Separator : public NativeControl {
  public:
   Separator();
   virtual ~Separator();
 
   // NativeControl overrides:
   virtual HWND CreateNativeControl(HWND parent_container);
   virtual LRESULT OnNotify(int w_param, LPNMHDR l_param);
 
   // View overrides:
-  virtual void GetPreferredSize(CSize* out);
+  virtual gfx::Size GetPreferredSize();
 
  private:
 
   DISALLOW_EVIL_CONSTRUCTORS(Separator);
 };
 
 }
 #endif  // #define CHROME_VIEWS_SEPARATOR_H__