Move nodeIsUserSelectAll() out from PositionAlgorithm template class

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index d93cbbc422bead89ba77151278120b0cbac91d21..6cb9f35f4a68f03d5a4fde44829c03c71e8df83c 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -544,7 +544,7 @@ bool Node::hasEditableStyle(EditableLevel editableLevel, UserSelectAllTreatment
         if ((node->isHTMLElement() || node->isDocumentNode()) && node->layoutObject()) {
             // Elements with user-select: all style are considered atomic
             // therefore non editable.
-            if (Position::nodeIsUserSelectAll(node) && treatment == UserSelectAllIsAlwaysNonEditable)
+            if (nodeIsUserSelectAll(node) && treatment == UserSelectAllIsAlwaysNonEditable)
                 return false;
             switch (node->layoutObject()->style()->userModify()) {
             case READ_ONLY: