Use Length for baselineShiftValue in SVGLayoutStyle

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 293 matching lines @@
     case CSSPropertyBackgroundSize:
     case CSSPropertyWebkitBackgroundSize:
         return createFromFillLayers<CSSPropertyBackgroundSize>(style.backgroundLayers(), style);
     case CSSPropertyBaselineShift:
         switch (style.svgStyle().baselineShift()) {
         case BS_SUPER:
             return AnimatableUnknown::create(CSSPrimitiveValue::createIdentifier(CSSValueSuper));
         case BS_SUB:
             return AnimatableUnknown::create(CSSPrimitiveValue::createIdentifier(CSSValueSub));
         default:
-            return AnimatableSVGLength::create(style.baselineShiftValue());
+            return createFromLength(style.baselineShiftValue(), style);
         }
     case CSSPropertyBorderBottomColor:
         return createFromColor(property, style);
     case CSSPropertyBorderBottomLeftRadius:
         return createFromLengthSize(style.borderBottomLeftRadius(), style);
     case CSSPropertyBorderBottomRightRadius:
         return createFromLengthSize(style.borderBottomRightRadius(), style);
     case CSSPropertyBorderBottomWidth:
         return createFromDouble(style.borderBottomWidth());
     case CSSPropertyBorderImageOutset:
@@ skipping 210 matching lines @@
     case CSSPropertyZIndex:
         return createFromDouble(style.zIndex());
     default:
         ASSERT_NOT_REACHED();
         // This return value is to avoid a release crash if possible.
         return AnimatableUnknown::create(nullptr);
     }
 }
 
 } // namespace blink