Have SelectorQuery API take rootNode by reference

Source/core/css/SelectorChecker.h

Index: Source/core/css/SelectorChecker.h
diff --git a/Source/core/css/SelectorChecker.h b/Source/core/css/SelectorChecker.h
index 127931de2226b9a3dd112f7fb0c8bd79ec9bcf61..2d228a8a1e7bdc1a8c4dc6959497f6f1c1be2412 100644
--- a/Source/core/css/SelectorChecker.h
+++ b/Source/core/css/SelectorChecker.h
@@ -103,22 +103,22 @@ public:
 
     Mode mode() const { return m_mode; }
 
-    static bool tagMatches(const Element*, const QualifiedName&, MatchingTagType = MatchingElement);
+    static bool tagMatches(const Element&, const QualifiedName&, MatchingTagType = MatchingElement);
     static bool isCommonPseudoClassSelector(const CSSSelector*);
-    static bool matchesFocusPseudoClass(const Element*);
-    static bool checkExactAttribute(const Element*, const QualifiedName& selectorAttributeName, const StringImpl* value);
+    static bool matchesFocusPseudoClass(const Element&);
+    static bool checkExactAttribute(const Element&, const QualifiedName& selectorAttributeName, const StringImpl* value);
 
     enum LinkMatchMask { MatchLink = 1, MatchVisited = 2, MatchAll = MatchLink | MatchVisited };
     static unsigned determineLinkMatchType(const CSSSelector*);
 
-    static bool isHostInItsShadowTree(const Element*, BehaviorAtBoundary, const ContainerNode* scope);
+    static bool isHostInItsShadowTree(const Element&, BehaviorAtBoundary, const ContainerNode* scope);
 
 private:
     bool checkScrollbarPseudoClass(const SelectorCheckingContext&, Document*, const CSSSelector*) const;
     Element* parentElement(const SelectorCheckingContext&) const;
     bool scopeContainsLastMatchedElement(const SelectorCheckingContext&) const;
 
-    static bool isFrameFocused(const Element*);
+    static bool isFrameFocused(const Element&);
 
     bool m_strictParsing;
     bool m_documentIsHTML;
@@ -136,31 +136,31 @@ inline bool SelectorChecker::isCommonPseudoClassSelector(const CSSSelector* sele
         || pseudoType == CSSSelector::PseudoFocus;
 }
 
-inline bool SelectorChecker::tagMatches(const Element* element, const QualifiedName& tagQName, MatchingTagType matchingTagType)
+inline bool SelectorChecker::tagMatches(const Element& element, const QualifiedName& tagQName, MatchingTagType matchingTagType)
 {
     if (tagQName == anyQName())
         return true;
     const AtomicString& localName = tagQName.localName();
-    if (localName != starAtom && (localName != element->localName() || matchingTagType == MatchingHostInItsShadowTree))
+    if (localName != starAtom && (localName != element.localName() || matchingTagType == MatchingHostInItsShadowTree))
         return false;
     const AtomicString& namespaceURI = tagQName.namespaceURI();
-    return namespaceURI == starAtom || namespaceURI == element->namespaceURI();
+    return namespaceURI == starAtom || namespaceURI == element.namespaceURI();
 }
 
-inline bool SelectorChecker::checkExactAttribute(const Element* element, const QualifiedName& selectorAttributeName, const StringImpl* value)
+inline bool SelectorChecker::checkExactAttribute(const Element& element, const QualifiedName& selectorAttributeName, const StringImpl* value)
 {
-    if (!element->hasAttributesWithoutUpdate())
+    if (!element.hasAttributesWithoutUpdate())
         return false;
-    unsigned size = element->attributeCount();
+    unsigned size = element.attributeCount();
     for (unsigned i = 0; i < size; ++i) {
-        const Attribute* attribute = element->attributeItem(i);
+        const Attribute* attribute = element.attributeItem(i);
         if (attribute->matches(selectorAttributeName) && (!value || attribute->value().impl() == value))
             return true;
     }
     return false;
 }
 
-inline bool SelectorChecker::isHostInItsShadowTree(const Element* element, BehaviorAtBoundary behaviorAtBoundary, const ContainerNode* scope)
+inline bool SelectorChecker::isHostInItsShadowTree(const Element& element, BehaviorAtBoundary behaviorAtBoundary, const ContainerNode* scope)
 {
     return (behaviorAtBoundary & ScopeIsShadowHost) && scope == element;
 }