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

Source/core/editing/htmlediting.cpp

Index: Source/core/editing/htmlediting.cpp
diff --git a/Source/core/editing/htmlediting.cpp b/Source/core/editing/htmlediting.cpp
index 858d2e4a51e38575cdd74a96aad6ef3aa0aaad5c..7a405ce2b5fd92769277d9c8d90321118739baf6 100644
--- a/Source/core/editing/htmlediting.cpp
+++ b/Source/core/editing/htmlediting.cpp
@@ -268,8 +268,8 @@ VisiblePosition firstEditablePositionAfterPositionInRoot(const Position& positio
 
     Position p = position;
 
-    if (&position.deprecatedNode()->treeScope() != &highestRoot->treeScope()) {
-        Node* shadowAncestor = highestRoot->treeScope().ancestorInThisScope(p.deprecatedNode());
+    if (position.deprecatedNode()->treeScope() != highestRoot->treeScope()) {
+        Node* shadowAncestor = highestRoot->treeScope()->ancestorInThisScope(p.deprecatedNode());
         if (!shadowAncestor)
             return VisiblePosition();
 
@@ -293,8 +293,8 @@ VisiblePosition lastEditablePositionBeforePositionInRoot(const Position& positio
 
     Position p = position;
 
-    if (&position.deprecatedNode()->treeScope() != &highestRoot->treeScope()) {
-        Node* shadowAncestor = highestRoot->treeScope().ancestorInThisScope(p.deprecatedNode());
+    if (position.deprecatedNode()->treeScope() != highestRoot->treeScope()) {
+        Node* shadowAncestor = highestRoot->treeScope()->ancestorInThisScope(p.deprecatedNode());
         if (!shadowAncestor)
             return VisiblePosition();