Move viewport unit resolution to style recalc time

Source/core/css/resolver/ViewportStyleResolver.cpp

Index: Source/core/css/resolver/ViewportStyleResolver.cpp
diff --git a/Source/core/css/resolver/ViewportStyleResolver.cpp b/Source/core/css/resolver/ViewportStyleResolver.cpp
index 61894a2458a283c32027c6837af2366d13c7fd3a..731e0254a699e6f313aa37da0e477b98fcedf5b1 100644
--- a/Source/core/css/resolver/ViewportStyleResolver.cpp
+++ b/Source/core/css/resolver/ViewportStyleResolver.cpp
@@ -184,10 +184,7 @@ Length ViewportStyleResolver::viewportLengthValue(CSSPropertyID id) const
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value.get());
 
     if (primitiveValue->isLength())
-        return primitiveValue->computeLength<Length>(CSSToLengthConversionData(m_document->renderStyle(), m_document->renderStyle(), 1.0f));
-
-    if (primitiveValue->isViewportPercentageLength())
-        return primitiveValue->viewportPercentageLength();
+        return primitiveValue->computeLength<Length>(CSSToLengthConversionData(m_document->renderStyle(), m_document->renderStyle(), m_document->renderView(), 1.0f));
 
     if (primitiveValue->isPercentage())
         return Length(primitiveValue->getFloatValue(), Percent);