Remove some dead code from inspector/

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 8e7de8bc9e5b4d93b1ae525904d3b8c63729b9db..e6664b2cc3d4538cfbfe73e5dfa23f13ee894b7c 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -543,19 +543,6 @@ void InspectorDOMAgent::discardBackendBindings()
     m_nodeGroupToBackendIdMap.clear();
 }
 
-int InspectorDOMAgent::pushNodeToFrontend(ErrorString* errorString, int documentNodeId, Node* nodeToPush)
-{
-    Document* document = assertDocument(errorString, documentNodeId);
-    if (!document)
-        return 0;
-    if (nodeToPush->document() != document) {
-        *errorString = "Node is not part of the document with given id";
-        return 0;
-    }
-
-    return pushNodePathToFrontend(nodeToPush);
-}
-
 Node* InspectorDOMAgent::nodeForId(int id)
 {
     if (!id)