Make font-weight animatable.

Source/core/rendering/style/RenderStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 542 matching lines @@
 
     EClear clear() const { return static_cast<EClear>(noninherited_flags._clear); }
     ETableLayout tableLayout() const { return static_cast<ETableLayout>(noninherited_flags._table_layout); }
 
     const Font& font() const;
     const FontMetrics& fontMetrics() const;
     const FontDescription& fontDescription() const;
     float specifiedFontSize() const;
     float computedFontSize() const;
     int fontSize() const;
+    FontWeight fontWeight() const;
 
     float textAutosizingMultiplier() const { return visual->m_textAutosizingMultiplier; }
 
     Length textIndent() const { return rareInheritedData->indent; }
     TextIndentLine textIndentLine() const { return static_cast<TextIndentLine>(rareInheritedData->m_textIndentLine); }
     ETextAlign textAlign() const { return static_cast<ETextAlign>(inherited_flags._text_align); }
     TextAlignLast textAlignLast() const { return static_cast<TextAlignLast>(rareInheritedData->m_textAlignLast); }
     TextJustify textJustify() const { return static_cast<TextJustify>(rareInheritedData->m_textJustify); }
     ETextTransform textTransform() const { return static_cast<ETextTransform>(inherited_flags._text_transform); }
     TextDecoration textDecorationsInEffect() const { return static_cast<TextDecoration>(inherited_flags._text_decorations); }
@@ skipping 507 matching lines @@
     void setClip(LengthBox box) { SET_VAR(visual, clip, box); }
 
     void setUnicodeBidi(EUnicodeBidi b) { noninherited_flags._unicodeBidi = b; }
 
     void setClear(EClear v) { noninherited_flags._clear = v; }
     void setTableLayout(ETableLayout v) { noninherited_flags._table_layout = v; }
 
     bool setFontDescription(const FontDescription&);
     // Only used for blending font sizes when animating and for text autosizing.
     void setFontSize(float);
+    void setFontWeight(FontWeight);
 
     void setTextAutosizingMultiplier(float v)
     {
         SET_VAR(visual, m_textAutosizingMultiplier, v);
         setFontSize(fontDescription().specifiedSize());
     }
 
     void setColor(const Color&);
     void setTextIndent(Length v) { SET_VAR(rareInheritedData, indent, v); }
     void setTextIndentLine(TextIndentLine v) { SET_VAR(rareInheritedData, m_textIndentLine, v); }
@@ skipping 778 matching lines @@
 }
 
 inline bool RenderStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags._pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 } // namespace WebCore
 
 #endif // RenderStyle_h