Specify clip rects when drawing Mac native widgets

Source/core/rendering/RenderThemeChromiumMac.h

 /*
  * This file is part of the theme implementation for form controls in WebCore.
  *
  * Copyright (C) 2005 Apple Computer, Inc.
  * Copyright (C) 2008, 2009 Google, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 103 matching lines @@
 
     virtual void adjustSearchFieldDecorationStyle(RenderStyle*, Element*) const OVERRIDE;
     virtual bool paintSearchFieldDecoration(RenderObject*, const PaintInfo&, const IntRect&) OVERRIDE;
 
     virtual void adjustSearchFieldResultsDecorationStyle(RenderStyle*, Element*) const OVERRIDE;
     virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&) OVERRIDE;
 
 private:
     virtual String fileListNameForWidth(Locale&, const FileList*, const Font&, int width) const OVERRIDE;
 
-    IntRect inflateRect(const IntRect&, const IntSize&, const int* margins, float zoomLevel = 1.0f) const;
-
     FloatRect convertToPaintingRect(const RenderObject* inputRenderer, const RenderObject* partRenderer, const FloatRect& inputRect, const IntRect&) const;
 
     // Get the control size based off the font. Used by some of the controls (like buttons).
     NSControlSize controlSizeForFont(RenderStyle*) const;
     NSControlSize controlSizeForSystemFont(RenderStyle*) const;
     void setControlSize(NSCell*, const IntSize* sizes, const IntSize& minSize, float zoomLevel = 1.0f);
     void setSizeFromFont(RenderStyle*, const IntSize* sizes) const;
     IntSize sizeForFont(RenderStyle*, const IntSize* sizes) const;
     IntSize sizeForSystemFont(RenderStyle*, const IntSize* sizes) const;
     void setFontFromControlSize(RenderStyle*, NSControlSize) const;
@@ skipping 65 matching lines @@
     mutable RetainPtr<NSTextFieldCell> m_textField;
 
     mutable HashMap<int, RGBA32> m_systemColorCache;
 
     RetainPtr<WebCoreRenderThemeNotificationObserver> m_notificationObserver;
 };
 
 } // namespace blink
 
 #endif // RenderThemeChromiumMac_h