Remove SVGElement.xmlbase/xmlspace/xmllang and no use codes.

Source/core/svg/SVGElement.cpp

Index: Source/core/svg/SVGElement.cpp
diff --git a/Source/core/svg/SVGElement.cpp b/Source/core/svg/SVGElement.cpp
index 0787df738942057b8cc88224d64e0b6174043d3f..2a7a3d87a5275e491cb1c2ccc1e19abca5d91a74 100644
--- a/Source/core/svg/SVGElement.cpp
+++ b/Source/core/svg/SVGElement.cpp
@@ -594,7 +594,6 @@ void SVGElement::parseAttribute(const QualifiedName& name, const AtomicString& v
         SVGParsingError parseError = NoError;
         m_className->setBaseValueAsString(value, parseError);
         reportAttributeParsingError(parseError, name, value);
-    } else if (name.matches(XMLNames::langAttr) || name.matches(XMLNames::spaceAttr)) {

[philipj_slow, 2015/05/08 08:09:24]

This isn't really related to removing the IDL attributes, but it is safe as
Element::parseAttribute() does nothing with xml:lang and xml:space. Please
mention this in the commit message.

     } else if (name == tabindexAttr) {
         Element::parseAttribute(name, value);
     } else {