Make SVGLengthMode an enum class

Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp

Index: Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp
diff --git a/Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp b/Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp
index fcc757a133983cebf3d538e139488d06984d0ab1..0bef014079d82af9e8329e7ba99a2d50f39b1e78 100644
--- a/Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp
+++ b/Source/core/svg/SVGFilterPrimitiveStandardAttributes.cpp
@@ -32,10 +32,10 @@ namespace blink {
 
 SVGFilterPrimitiveStandardAttributes::SVGFilterPrimitiveStandardAttributes(const QualifiedName& tagName, Document& document)
     : SVGElement(tagName, document)
-    , m_x(SVGAnimatedLength::create(this, SVGNames::xAttr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
-    , m_y(SVGAnimatedLength::create(this, SVGNames::yAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
-    , m_width(SVGAnimatedLength::create(this, SVGNames::widthAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
-    , m_height(SVGAnimatedLength::create(this, SVGNames::heightAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
+    , m_x(SVGAnimatedLength::create(this, SVGNames::xAttr, SVGLength::create(SVGLengthMode::Width), AllowNegativeLengths))
+    , m_y(SVGAnimatedLength::create(this, SVGNames::yAttr, SVGLength::create(SVGLengthMode::Height), AllowNegativeLengths))
+    , m_width(SVGAnimatedLength::create(this, SVGNames::widthAttr, SVGLength::create(SVGLengthMode::Width), ForbidNegativeLengths))
+    , m_height(SVGAnimatedLength::create(this, SVGNames::heightAttr, SVGLength::create(SVGLengthMode::Height), ForbidNegativeLengths))
     , m_result(SVGAnimatedString::create(this, SVGNames::resultAttr, SVGString::create()))
 {
     // Spec: If the x/y attribute is not specified, the effect is as if a value of "0%" were specified.