Rename duplicate symbols inside core/dom

third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp

Index: third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp
diff --git a/third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp b/third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp
index f2a05a3b0fefa6471fe9a7003b8f7fc9251c5ed2..df773c515861aa050a779e35f59928fbef4ba920 100644
--- a/third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp
+++ b/third_party/WebKit/Source/core/dom/shadow/FlatTreeTraversal.cpp
@@ -288,8 +288,9 @@ Node* FlatTreeTraversal::previousSkippingChildren(const Node& node) {
   return traversePreviousAncestorSibling(node);
 }
 
-static Node* previousAncestorSiblingPostOrder(const Node& current,
-                                              const Node* stayWithin) {
+Node* FlatTreeTraversal::previousAncestorSiblingPostOrder(
+    const Node& current,
+    const Node* stayWithin) {
   DCHECK(!FlatTreeTraversal::previousSibling(current));
   for (Node* parent = FlatTreeTraversal::parent(current); parent;
        parent = FlatTreeTraversal::parent(*parent)) {