Make font-weight animatable.

Source/core/animation/css/CSSPropertyAnimation.cpp

 /*
  * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 482 matching lines @@
     gPropertyWrappers->append(new FillLayersPropertyWrapper(CSSPropertyWebkitMaskSize, &RenderStyle::maskLayers));
 
     gPropertyWrappers->append(new PropertyWrapper<LengthPoint>(CSSPropertyObjectPosition, &RenderStyle::objectPosition));
 
     gPropertyWrappers->append(new PropertyWrapper<float>(CSSPropertyFontSize,
         // Must pass a specified size to setFontSize if Text Autosizing is enabled, but a computed size
         // if text zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
         // FIXME: Should we introduce an option to pass the computed font size here, allowing consumers to
         // enable text zoom rather than Text Autosizing? See http://crbug.com/227545.
         &RenderStyle::specifiedFontSize));
+    gPropertyWrappers->append(new PropertyWrapper<FontWeight>(CSSPropertyFontWeight, &RenderStyle::fontWeight));
     gPropertyWrappers->append(new PropertyWrapper<unsigned short>(CSSPropertyWebkitColumnRuleWidth, &RenderStyle::columnRuleWidth));
     gPropertyWrappers->append(new PropertyWrapper<float>(CSSPropertyWebkitColumnGap, &RenderStyle::columnGap));
     gPropertyWrappers->append(new PropertyWrapper<unsigned short>(CSSPropertyWebkitColumnCount, &RenderStyle::columnCount));
     gPropertyWrappers->append(new PropertyWrapper<float>(CSSPropertyWebkitColumnWidth, &RenderStyle::columnWidth));
     gPropertyWrappers->append(new PropertyWrapper<short>(CSSPropertyWebkitBorderHorizontalSpacing, &RenderStyle::horizontalBorderSpacing));
     gPropertyWrappers->append(new PropertyWrapper<short>(CSSPropertyWebkitBorderVerticalSpacing, &RenderStyle::verticalBorderSpacing));
     gPropertyWrappers->append(new PropertyWrapper<int>(CSSPropertyZIndex, &RenderStyle::zIndex));
     gPropertyWrappers->append(new PropertyWrapper<short>(CSSPropertyOrphans, &RenderStyle::orphans));
     gPropertyWrappers->append(new PropertyWrapper<short>(CSSPropertyWidows, &RenderStyle::widows));
     gPropertyWrappers->append(new PropertyWrapper<Length>(CSSPropertyLineHeight, &RenderStyle::specifiedLineHeight));
@@ skipping 88 matching lines @@
     // FIXME: transitions of text-decoration-color are broken
     if (prop == CSSPropertyTextDecorationColor)
         return true;
 
     ensurePropertyMap();
     return wrapperForProperty(prop)->equals(a, b);
 }
 
 
 }