Expand system font values during property parsing.

Source/core/rendering/RenderThemeChromiumSkia.h

 /*
  * This file is part of the WebKit project.
  *
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
  * Copyright (C) 2007 Holger Hans Peter Freyther
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008, 2009 Google, Inc.
  * All rights reserved.
  *
@@ skipping 46 matching lines @@
     virtual Color platformActiveSelectionBackgroundColor() const override;
     virtual Color platformInactiveSelectionBackgroundColor() const override;
     virtual Color platformActiveSelectionForegroundColor() const override;
     virtual Color platformInactiveSelectionForegroundColor() const override;
     virtual Color platformFocusRingColor() const override;
 
     // To change the blink interval, override caretBlinkIntervalInternal instead of this one so that we may share layout test code an intercepts.
     virtual double caretBlinkInterval() const override;
 
     // System fonts.
-    virtual void systemFont(CSSValueID, FontDescription&) const override;
+    virtual void systemFont(CSSValueID systemFontID, FontStyle&, FontWeight&, float& fontSize, AtomicString& fontFamily) const;
 
     virtual int minimumMenuListSize(RenderStyle*) const override;
 
     virtual void setCheckboxSize(RenderStyle*) const override;
 
     virtual void setRadioSize(RenderStyle*) const override;
 
     virtual void adjustButtonStyle(RenderStyle*, Element*) const override;
 
     virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&) override;
@@ skipping 77 matching lines @@
     int menuListInternalPadding(RenderStyle*, int paddingType) const;
     bool paintMediaButtonInternal(GraphicsContext*, const IntRect&, Image*);
     IntRect convertToPaintingRect(RenderObject* inputRenderer, const RenderObject* partRenderer, LayoutRect partRect, const IntRect& localOffset) const;
 
     static const RGBA32 defaultTapHighlightColor = 0x2e000000; // 18% black.
 };
 
 } // namespace blink
 
 #endif // RenderThemeChromiumSkia_h