Remove support for pseudo classes in <content select>.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 378 matching lines @@
 {
     ASSERT(host);
     if (!host->shadow()) {
         exceptionState.throwDOMException(InvalidAccessError, "The host element does not have a shadow.");
         return false;
     }
 
     return host->shadow()->ensureSelectFeatureSet().hasSelectorForAttribute(attributeName);
 }
 
-bool Internals::hasSelectorForPseudoClassInShadow(Element* host, const String& pseudoClass, ExceptionState& exceptionState)
-{
-    ASSERT(host);
-    if (!host->shadow()) {
-        exceptionState.throwDOMException(InvalidAccessError, "The host element does not have a shadow.");
-        return 0;
-    }
-    return host->shadow()->ensureSelectFeatureSet().hasSelectorForPseudoType(CSSSelector::parsePseudoType(AtomicString(pseudoClass), false));
-}
-
 unsigned short Internals::compareTreeScopePosition(const Node* node1, const Node* node2, ExceptionState& exceptionState) const
 {
     ASSERT(node1 && node2);
     const TreeScope* treeScope1 = node1->isDocumentNode() ? static_cast<const TreeScope*>(toDocument(node1)) :
         node1->isShadowRoot() ? static_cast<const TreeScope*>(toShadowRoot(node1)) : 0;
     const TreeScope* treeScope2 = node2->isDocumentNode() ? static_cast<const TreeScope*>(toDocument(node2)) :
         node2->isShadowRoot() ? static_cast<const TreeScope*>(toShadowRoot(node2)) : 0;
     if (!treeScope1 || !treeScope2) {
         exceptionState.throwDOMException(InvalidAccessError, String::format("The %s node is neither a document node, nor a shadow root.", treeScope1 ? "second" : "first"));
         return 0;
@@ skipping 1952 matching lines @@
 
 ClientRectList* Internals::focusRingRects(Element* element)
 {
     Vector<LayoutRect> rects;
     if (element && element->layoutObject())
         element->layoutObject()->addFocusRingRects(rects, LayoutPoint());
     return ClientRectList::create(rects);
 }
 
 } // namespace blink