Convert GetPreferredSize from:...

chrome/views/native_scroll_bar.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_SCROLLBAR_H__
 #define CHROME_VIEWS_NATIVE_SCROLLBAR_H__
 
 #include "chrome/views/scroll_bar.h"
 
 namespace ChromeViews {
@@ skipping 12 matching lines @@
 /////////////////////////////////////////////////////////////////////////////
 class NativeScrollBar : public ScrollBar {
  public:
 
   // Create new scrollbar, either horizontal or vertical
   explicit NativeScrollBar(bool is_horiz);
   virtual ~NativeScrollBar();
 
   // Overridden for layout purpose
   virtual void Layout();
-  virtual void GetPreferredSize(CSize* sz);
+  virtual gfx::Size GetPreferredSize();
   virtual void DidChangeBounds(const CRect& previous, const CRect& current);
 
   // Overridden for keyboard UI purpose
   virtual bool OnKeyPressed(const KeyEvent& event);
   virtual bool OnMouseWheel(const MouseWheelEvent& e);
 
   virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
 
   // Overridden from ScrollBar
   virtual void Update(int viewport_size, int content_size, int current_pos);
@@ skipping 11 matching lines @@
 
   // sb_container_ is a custom hwnd that we use to wrap the real
   // windows scrollbar. We need to do this to get the scroll events
   // without having to do anything special in the high level hwnd.
   ScrollBarContainer* sb_container_;
 };
 
 }
 #endif