Add fast path for querySelector(All)

Source/core/dom/SelectorQuery.h

Index: Source/core/dom/SelectorQuery.h
diff --git a/Source/core/dom/SelectorQuery.h b/Source/core/dom/SelectorQuery.h
index 79e6381faeea9d295ebf021105778e29235551c4..5b37ed2c3d2c913479ff101418de75350953d3c3 100644
--- a/Source/core/dom/SelectorQuery.h
+++ b/Source/core/dom/SelectorQuery.h
@@ -27,6 +27,7 @@
 #define SelectorQuery_h
 
 #include "core/css/CSSSelectorList.h"
+#include "core/dom/DocumentOrderedList.h"
 #include <wtf/HashMap.h>
 #include <wtf/text/AtomicStringHash.h>
 #include <wtf/Vector.h>
@@ -56,7 +57,7 @@ private:
     };
 
     bool selectorMatches(const SelectorData&, Element*, const Node*) const;
-    std::pair<bool, Node*> findTraverseRoot(Node* traverseRoot) const;
+    bool findTraverseRoot(Node* rootNode, DocumentOrderedList& traversalRoots) const;
     template <bool firstMatchOnly>
     void execute(Node* rootNode, Vector<RefPtr<Node> >&) const;