CSS Length calculation with MediaValues

Source/core/css/CSSCalculationValue.h

Index: Source/core/css/CSSCalculationValue.h
diff --git a/Source/core/css/CSSCalculationValue.h b/Source/core/css/CSSCalculationValue.h
index e99d4a11ce9edf2afc4476462b42982f0ce63f4e..36e773b6499537347c43775679b8a32f15eb8cb6 100644
--- a/Source/core/css/CSSCalculationValue.h
+++ b/Source/core/css/CSSCalculationValue.h
@@ -43,6 +43,7 @@ namespace WebCore {
 
 class CSSParserValueList;
 class CSSValueList;
+class CSSLengthData;
 class CalculationValue;
 class CalcExpressionNode;
 class Length;
@@ -67,7 +68,7 @@ public:
     virtual bool isZero() const = 0;
     virtual PassOwnPtr<CalcExpressionNode> toCalcValue(const CSSToLengthConversionData&) const = 0;
     virtual double doubleValue() const = 0;
-    virtual double computeLengthPx(const CSSToLengthConversionData&) const = 0;
+    virtual double computeLengthPx(const CSSLengthData*) const = 0;
     virtual String customCSSText() const = 0;
     virtual bool equals(const CSSCalcExpressionNode& other) const { return m_category == other.m_category && m_isInteger == other.m_isInteger; }
     virtual Type type() const = 0;
@@ -109,7 +110,7 @@ public:
     double doubleValue() const;
     bool isNegative() const { return m_expression->doubleValue() < 0; }
     ValueRange permittedValueRange() { return m_nonNegative ? ValueRangeNonNegative : ValueRangeAll; }
-    double computeLengthPx(const CSSToLengthConversionData&) const;
+    double computeLengthPx(const CSSLengthData*) const;
     CSSCalcExpressionNode* expressionNode() const { return m_expression.get(); }
 
     String customCSSText() const;