Move viewport unit resolution to style recalc time

Source/core/css/CSSCalculationValue.cpp

Index: Source/core/css/CSSCalculationValue.cpp
diff --git a/Source/core/css/CSSCalculationValue.cpp b/Source/core/css/CSSCalculationValue.cpp
index e27cba3a66db7d1722794fe52a7a0ceb7ee51532..db983ea26dafc016e3afc2a6a0d54bca8a0289f4 100644
--- a/Source/core/css/CSSCalculationValue.cpp
+++ b/Source/core/css/CSSCalculationValue.cpp
@@ -65,6 +65,10 @@ static CalculationCategory unitCategory(CSSPrimitiveValue::UnitTypes type)
     case CSSPrimitiveValue::CSS_PC:
     case CSSPrimitiveValue::CSS_REMS:
     case CSSPrimitiveValue::CSS_CHS:
+    case CSSPrimitiveValue::CSS_VW:
+    case CSSPrimitiveValue::CSS_VH:
+    case CSSPrimitiveValue::CSS_VMIN:
+    case CSSPrimitiveValue::CSS_VMAX:
         return CalcLength;
     case CSSPrimitiveValue::CSS_VARIABLE_NAME:
         return CalcVariable;
@@ -746,10 +750,6 @@ PassRefPtr<CSSCalcExpressionNode> CSSCalcValue::createExpressionNode(const Lengt
 {
     switch (length.type()) {
     case Percent:
-    case ViewportPercentageWidth:
-    case ViewportPercentageHeight:
-    case ViewportPercentageMin:
-    case ViewportPercentageMax:
     case Fixed:
         return createExpressionNode(CSSPrimitiveValue::create(length, zoom), length.value() == trunc(length.value()));
     case Calculated: