Remove dead code from HTMLElement::parseAttribute

Element::parseAttribute does nothing so there's no reason to have a
special case to call it for id, class and style attributes.

Review URL: https://codereview.chromium.org/236363005

git-svn-id: svn://svn.chromium.org/blink/trunk@171431 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/html/HTMLElement.cpp

@@ -302,9 +302,6 @@ const AtomicString& HTMLElement::eventNameForAttributeName(const QualifiedName&
 
 void HTMLElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    if (isIdAttributeName(name) || name == classAttr || name == styleAttr)
-        return Element::parseAttribute(name, value);
-
     if (name == dirAttr)
         dirAttributeChanged(value);
     else if (name == tabindexAttr) {