Use SVGLength's wrapped CSSPrimitiveValue for pres.attr. style

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 171cd286aa7514b5fbc16b5c07135170c4fda246..39bb57fdbec4749da32330bf05a82ad84891514f 100644
--- a/third_party/WebKit/Source/core/svg/SVGLength.h
+++ b/third_party/WebKit/Source/core/svg/SVGLength.h
@@ -53,10 +53,6 @@ public:
     PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
 
     CSSPrimitiveValue::UnitType typeWithCalcResolved() const { return m_value->typeWithCalcResolved(); }
-    CSSPrimitiveValue::UnitType cssUnitTypeQuirk() const
-    {
-        return m_value->typeWithCalcResolved();
-    }
     void setUnitType(CSSPrimitiveValue::UnitType);
     SVGLengthMode unitMode() const { return static_cast<SVGLengthMode>(m_unitMode); }
 
@@ -72,6 +68,8 @@ public:
         m_value = CSSPrimitiveValue::create(value, m_value->typeWithCalcResolved());
     }
 
+    CSSPrimitiveValue* asCSSPrimitiveValue() const { return m_value.get(); }
+
     // Resolves LengthTypePercentage into a normalized floating point number (full value is 1.0).
     float valueAsPercentage() const;