Added support of calc() for SVGLength

third_party/WebKit/Source/core/svg/SVGLength.h

Index: third_party/WebKit/Source/core/svg/SVGLength.h
diff --git a/third_party/WebKit/Source/core/svg/SVGLength.h b/third_party/WebKit/Source/core/svg/SVGLength.h
index 089e8f8f1af11673dc44bbc561833d47806c4ba2..7d6f773e8ef240e9e9543d6aa1dd024f8a974ca0 100644
--- a/third_party/WebKit/Source/core/svg/SVGLength.h
+++ b/third_party/WebKit/Source/core/svg/SVGLength.h
@@ -56,6 +56,7 @@ public:
 
     float value(const SVGLengthContext&) const;
     void setValue(float, const SVGLengthContext&);
+    void setValueAsNumber(float);
 
     float valueInSpecifiedUnits() const { return m_value->getFloatValue(); }
     void setValueInSpecifiedUnits(float value)
@@ -82,6 +83,7 @@ public:
 
     // Helper functions
     inline bool isRelative() const { return CSSPrimitiveValue::isRelativeUnit(m_value->typeWithCalcResolved()); }
+    inline bool isCalculated() const { return m_value->isCalculated(); }
 
     bool isZero() const
     {
@@ -98,10 +100,15 @@ public:
     static AnimatedPropertyType classType() { return AnimatedLength; }
     AnimatedPropertyType type() const override { return classType(); }
 
+    static CSSPrimitiveValue::UnitType toUnitType(int lengthUnitType)
+    {
+        return static_cast<CSSPrimitiveValue::UnitType>(CSSPrimitiveValue::lengthUnitTypeToUnitType(static_cast<CSSPrimitiveValue::LengthUnitType>(lengthUnitType)));

[fs, 2016/07/16 21:13:02]

Shouldn't need to cast what lengthUnitTypeToUnitType returns and I think we
might as well just use the CSSPrimitiveValue method directly - potentially with
a cast on the input.

[Shanmuga Pandi, 2016/07/18 13:35:33]

Done.

+    }
 private:
     SVGLength(SVGLengthMode);
     SVGLength(const SVGLength&);
 
+    float resolveCalcValue(const SVGLengthContext&) const;
     Member<const CSSPrimitiveValue> m_value;
     unsigned m_unitMode : 2;
 };