Visit the Optimized Code Map on first call rather than closure creation.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 2d0f9ea868e1cdba219dd606a2bb093344b09a20..00275d57ff47123cb6c28756137100472d2aff28 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6688,6 +6688,13 @@ class SharedFunctionInfo: public HeapObject {
 
   static const int kNotFound = -1;
 
+  // Helpers for assembly code that does a backwards walk of the optimized code
+  // map.
+  static inline int OffsetToPreviousContext();
+  static inline int OffsetToPreviousCachedCode();
+  static inline int OffsetToPreviousLiterals();
+  static inline int OffsetToPreviousOsrAstId();
+
   // [scope_info]: Scope info.
   DECL_ACCESSORS(scope_info, ScopeInfo)