[svg2] Make SVGLength wrap a CSSPrimitiveValue

Source/core/css/resolver/StyleBuilderConverter.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  *     * 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
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 181 matching lines @@
     float em = state.parentStyle()->specifiedFontSize();
     float rem = state.rootElementStyle() ? state.rootElementStyle()->specifiedFontSize() : 1.0f;
     CSSToLengthConversionData::FontSizes fontSizes(em, rem, &state.parentStyle()->font());
     CSSToLengthConversionData::ViewportSize viewportSize(state.document().layoutView());
 
     CSSToLengthConversionData conversionData(state.style(), fontSizes, viewportSize, 1.0f);
     if (primitiveValue->isLength())
         return primitiveValue->computeLength<float>(conversionData);
     if (primitiveValue->isCalculatedPercentageWithLength())
         return primitiveValue->cssCalcValue()->toCalcValue(conversionData)->evaluate(parentSize.value);
+    if (primitiveValue->isNumber())
+        return primitiveValue->getFloatValue();
 
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 FontDescription::Size StyleBuilderConverter::convertFontSize(StyleResolverState& state, CSSValue* value)
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
 
     FontDescription::Size parentSize(0, 0.0f, false);
@@ skipping 683 matching lines @@
     CSSPrimitiveValue* primitiveValueZ = toCSSPrimitiveValue(list->item(2));
 
     return TransformOrigin(
         convertOriginLength<CSSValueLeft, CSSValueRight>(state, primitiveValueX),
         convertOriginLength<CSSValueTop, CSSValueBottom>(state, primitiveValueY),
         StyleBuilderConverter::convertComputedLength<float>(state, primitiveValueZ)
     );
 }
 
 } // namespace blink