Fix inconsistent frame detach behavior of ContainerNode::parserRemoveChild.

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 1f921cf44822525e67ea4da85dbe81caa37cbf64..e378518492eb7fe62281a4dcac8f8c633392a082 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -2258,17 +2258,6 @@ void Node::decrementConnectedSubframeCount(unsigned amount)
     rareData()->decrementConnectedSubframeCount(amount);
 }
 
-void Node::updateAncestorConnectedSubframeCountForRemoval() const
-{
-    unsigned count = connectedSubframeCount();
-
-    if (!count)
-        return;
-
-    for (Node* node = parentOrShadowHostNode(); node; node = node->parentOrShadowHostNode())
-        node->decrementConnectedSubframeCount(count);
-}
-
 void Node::updateAncestorConnectedSubframeCountForInsertion() const
 {
     unsigned count = connectedSubframeCount();