WIP (Introduce WTF::NonNullPtr<T>.)

Source/core/html/HTMLAnchorElement.cpp

Index: Source/core/html/HTMLAnchorElement.cpp
diff --git a/Source/core/html/HTMLAnchorElement.cpp b/Source/core/html/HTMLAnchorElement.cpp
index 43ee0a17952067dda10ab4ada869d4649d81f2a6..cea707e62a1aa4fc489a667c7e9efcc577f5d097 100644
--- a/Source/core/html/HTMLAnchorElement.cpp
+++ b/Source/core/html/HTMLAnchorElement.cpp
@@ -279,7 +279,7 @@ void HTMLAnchorElement::parseAttribute(const QualifiedName& name, const AtomicSt
         setIsLink(!value.isNull());
         if (wasLink != isLink()) {
             didAffectSelector(AffectedSelectorLink | AffectedSelectorVisited | AffectedSelectorEnabled);
-            if (wasLink && treeScope().adjustedFocusedElement() == this) {
+            if (wasLink && treeScope()->adjustedFocusedElement() == this) {
                 // We might want to call blur(), but it's dangerous to dispatch
                 // events here.
                 document().setNeedsFocusedElementCheck();