Convert GetPreferredSize from:...

chrome/views/native_button.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_NATIVE_BUTTON_H__
 #define CHROME_VIEWS_NATIVE_BUTTON_H__
 
 #include <string>
 
 #include "base/gfx/size.h"
@@ skipping 12 matching lines @@
 //             get all the listenery-stuff for free and to work with
 //             AddManagedButton.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class NativeButton : public NativeControl {
  public:
   explicit NativeButton(const std::wstring& label);
   NativeButton(const std::wstring& label, bool is_default);
   virtual ~NativeButton();
 
-  virtual void GetPreferredSize(CSize *out);
+  virtual gfx::Size GetPreferredSize();
 
   void SetLabel(const std::wstring& l);
   const std::wstring GetLabel() const;
 
   class Listener {
    public:
     //
     // This is invoked once the button is released.
     virtual void ButtonPressed(NativeButton* sender) = 0;
   };
@@ skipping 87 matching lines @@
   // Storage of strings needed for accessibility.
   std::wstring accessible_name_;
 
   DISALLOW_EVIL_CONSTRUCTORS(NativeButton);
 };
 
 }
 
 #endif  // CHROME_VIEWS_NATIVE_BUTTON_H__