Make units-000.htm from ietestcenter pass.

Source/core/css/resolver/StyleBuilderCustom.h

 /*
  * 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 51 matching lines @@
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
     CSSValueID valueID = primitiveValue->getValueID();
     if (valueID == CSSValueThin)
         return 1;
     if (valueID == CSSValueMedium)
         return 3;
     if (valueID == CSSValueThick)
         return 5;
     if (primitiveValue->isViewportPercentageLength())
-        return primitiveValue->viewportPercentageLength().value();
+        return intValueForLength(primitiveValue->viewportPercentageLength(), 0, state.document().renderView());

[rune, 2013/10/10 11:59:45]

To reviewer:

I should have converted to float instead of int? Current callers either use
unsigned or unsigned short. The whole convert to template type T without range
checks in this method feels bad in the first place.

[eae, 2013/10/10 15:25:01]

Ints is right for borders. Good catch.

     if (valueID == CSSValueInvalid) {
         float zoom = state.style()->effectiveZoom();
         // Any original result that was >= 1 should not be allowed to fall below 1.
         // This keeps border lines from vanishing.
         T result = primitiveValue->computeLength<T>(state.style(), state.rootElementStyle(), zoom);
         if (zoom < 1.0f && result < 1.0) {
             T originalLength = primitiveValue->computeLength<T>(state.style(), state.rootElementStyle(), 1.0);
             if (originalLength >= 1.0)
                 return 1.0;
         }
         return result;
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 template <CSSValueID IdForNone>
 AtomicString StyleBuilderConverter::convertString(StyleResolverState&, CSSValue* value)
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
     if (primitiveValue->getValueID() == IdForNone)
         return nullAtom;
     return primitiveValue->getStringValue();
 }
 
 } // namespace WebCore
 
 #endif