Web Animations CSS: Add unsigned short to support outline-width

Source/core/animation/css/CSSAnimatableValueFactory.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 163 matching lines @@
     case CSSPropertyMaxWidth:
         return createFromLength(style->maxWidth(), style);
     case CSSPropertyMinHeight:
         return createFromLength(style->minHeight(), style);
     case CSSPropertyMinWidth:
         return createFromLength(style->minWidth(), style);
     case CSSPropertyOpacity:
         return createFromDouble(style->opacity());
     case CSSPropertyOutlineColor:
         return createFromColor(property, style);
+    case CSSPropertyOutlineWidth:
+        return createFromDouble(style->outlineWidth());
     case CSSPropertyPaddingBottom:
         return createFromLength(style->paddingBottom(), style);
     case CSSPropertyPaddingLeft:
         return createFromLength(style->paddingLeft(), style);
     case CSSPropertyPaddingRight:
         return createFromLength(style->paddingRight(), style);
     case CSSPropertyPaddingTop:
         return createFromLength(style->paddingTop(), style);
     case CSSPropertyRight:
         return createFromLength(style->right(), style);
@@ skipping 26 matching lines @@
     case CSSPropertyWidth:
         return createFromLength(style->width(), style);
     default:
         RELEASE_ASSERT_WITH_MESSAGE(!CSSAnimations::isAnimatableProperty(property), "Web Animations not yet implemented: Create AnimatableValue from render style: %s", getPropertyNameString(property).utf8().data());
         ASSERT_NOT_REACHED();
         return 0;
     }
 }
 
 } // namespace WebCore