Make SelectorChecker::tagMatches internal to the SelectorChecker

Source/core/css/SelectorChecker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 76 matching lines @@
 static bool matchesSpatialNavigationFocusPseudoClass(const Element& element)
 {
     return isHTMLOptionElement(element) && toHTMLOptionElement(element).spatialNavigationFocused() && isFrameFocused(element);
 }
 
 static bool matchesListBoxPseudoClass(const Element& element)
 {
     return isHTMLSelectElement(element) && !toHTMLSelectElement(element).usesMenuList();
 }
 
+static bool matchesTagName(const Element& element, const QualifiedName& tagQName)
+{
+    if (tagQName == anyQName())
+        return true;
+    const AtomicString& localName = tagQName.localName();
+    if (localName != starAtom && localName != element.localName())
+        return false;
+    const AtomicString& namespaceURI = tagQName.namespaceURI();
+    return namespaceURI == starAtom || namespaceURI == element.namespaceURI();
+}
+
 static Element* parentElement(const SelectorChecker::SelectorCheckingContext& context)
 {
     // - If context.scope is a shadow root, we should walk up to its shadow host.
     // - If context.scope is some element in some shadow tree and querySelector initialized the context,
     //   e.g. shadowRoot.querySelector(':host *'),
     //   (a) context.element has the same treescope as context.scope, need to walk up to its shadow host.
     //   (b) Otherwise, should not walk up from a shadow root to a shadow host.
     if (context.scope && (context.scope == context.element->containingShadowRoot() || context.scope->treeScope() == context.element->treeScope()))
         return context.element->parentOrShadowHostElement();
     return context.element->parentElement();
@@ skipping 449 matching lines @@
     const CSSSelector& selector = *context.selector;
 
     // Only :host and :host-context() should match the host: http://drafts.csswg.org/css-scoping/#host-element
     if (context.scope && context.scope->shadowHost() == element && (!selector.isHostPseudoClass()
         && !context.treatShadowHostAsNormalScope
         && selector.match() != CSSSelector::PseudoElement))
             return false;
 
     switch (selector.match()) {
     case CSSSelector::Tag:
-        return SelectorChecker::tagMatches(element, selector.tagQName());
+        return matchesTagName(element, selector.tagQName());
     case CSSSelector::Class:
         return element.hasClass() && element.classNames().contains(selector.value());
     case CSSSelector::Id:
         return element.hasID() && element.idForStyleResolution() == selector.value();
 
     // Attribute selectors
     case CSSSelector::AttributeExact:
     case CSSSelector::AttributeSet:
     case CSSSelector::AttributeHyphen:
     case CSSSelector::AttributeList:
@@ skipping 556 matching lines @@
         && &element == element.treeScope().adjustedFocusedElement();
 }
 
 template
 SelectorChecker::Match SelectorChecker::match(const SelectorCheckingContext&, const DOMSiblingTraversalStrategy&, MatchResult*) const;
 
 template
 SelectorChecker::Match SelectorChecker::match(const SelectorCheckingContext&, const ShadowDOMSiblingTraversalStrategy&, MatchResult*) const;
 
 }