Do not eagerly instantiate accessors' JSFunction.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 796ac5bf8cdb3106064a0f49b2facb92dff43b6e..ebd7013815cd7335522d62015af3159511f014ae 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -10340,7 +10340,8 @@ class AccessorPair: public Struct {
   inline void set(AccessorComponent component, Object* value);
 
   // Note: Returns undefined instead in case of a hole.
-  Object* GetComponent(AccessorComponent component);
+  static Handle<Object> GetComponent(Handle<AccessorPair> accessor_pair,
+                                     AccessorComponent component);
 
   // Set both components, skipping arguments which are a JavaScript null.
   inline void SetComponents(Object* getter, Object* setter);