Remove support for pseudo classes in <content select>.

Source/core/dom/SelectorQuery.cpp

 /*
  * Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Samsung Electronics. 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 11 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/dom/SelectorQuery.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/css/SelectorChecker.h"
-#include "core/css/SiblingTraversalStrategies.h"
 #include "core/css/parser/CSSParser.h"
 #include "core/dom/Document.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/Node.h"
 #include "core/dom/StaticNodeList.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/dom/shadow/ShadowRoot.h"
 
 namespace blink {
@@ skipping 73 matching lines @@
     }
 }
 
 inline bool SelectorDataList::selectorMatches(const CSSSelector& selector, Element& element, const ContainerNode& rootNode) const
 {
     SelectorChecker selectorChecker(SelectorChecker::QueryingRules);
     SelectorChecker::SelectorCheckingContext selectorCheckingContext(selector, &element, SelectorChecker::VisitedMatchDisabled);
     selectorCheckingContext.scope = !rootNode.isDocumentNode() ? &rootNode : 0;
     if (selectorCheckingContext.scope)
         selectorCheckingContext.scopeContainsLastMatchedElement = true;
-    return selectorChecker.match(selectorCheckingContext, DOMSiblingTraversalStrategy()) == SelectorChecker::SelectorMatches;
+    return selectorChecker.match(selectorCheckingContext) == SelectorChecker::SelectorMatches;
 }
 
 bool SelectorDataList::matches(Element& targetElement) const
 {
     unsigned selectorCount = m_selectors.size();
     for (unsigned i = 0; i < selectorCount; ++i) {
         if (selectorMatches(*m_selectors[i], targetElement, targetElement))
             return true;
     }
 
@@ skipping 401 matching lines @@
 
     return m_entries.add(selectors, SelectorQuery::adopt(selectorList)).storedValue->value.get();
 }
 
 void SelectorQueryCache::invalidate()
 {
     m_entries.clear();
 }
 
 }