[turbofan] Delay initialization in escape analysis

src/compiler/escape-analysis.h

Index: src/compiler/escape-analysis.h
diff --git a/src/compiler/escape-analysis.h b/src/compiler/escape-analysis.h
index cfe2f521aa4472c8b0134290c0d2ba03f1c8c4d2..c3f236d556b73942f6c4a0c7227d5af599766263 100644
--- a/src/compiler/escape-analysis.h
+++ b/src/compiler/escape-analysis.h
@@ -149,8 +149,6 @@ class EscapeAnalysis {
   VirtualObject* CopyForModificationAt(VirtualObject* obj, VirtualState* state,
                                        Node* node);
   VirtualObject* GetVirtualObject(Node* at, NodeId id);
-  VirtualObject* ResolveVirtualObject(VirtualState* state, Node* node);
-  Node* GetReplacementIfSame(ZoneVector<VirtualObject*>& objs);
 
   bool SetEscaped(Node* node);
   Node* replacement(NodeId id);