Revert "Remove special ExecutableAccessorInfo handling based on flag"

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 26b008a9468610b00ab63357aa93a2af3d647b41..3e83eda46f82b11c190041a7e29b0dd6d12272e9 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2148,6 +2148,13 @@ class JSObject: public JSReceiver {
       StrictMode strict_mode,
       StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED);
 
+  // SetLocalPropertyIgnoreAttributes converts callbacks to fields. We need to
+  // grant an exemption to ExecutableAccessor callbacks in some cases.
+  enum ExecutableAccessorInfoHandling {
+    DEFAULT_HANDLING,
+    DONT_FORCE_FIELD
+  };
+
   MUST_USE_RESULT static MaybeHandle<Object> SetOwnPropertyIgnoreAttributes(
       Handle<JSObject> object,
       Handle<Name> key,
@@ -2156,7 +2163,8 @@ class JSObject: public JSReceiver {
       ValueType value_type = OPTIMAL_REPRESENTATION,
       StoreMode mode = ALLOW_AS_CONSTANT,
       ExtensibilityCheck extensibility_check = PERFORM_EXTENSIBILITY_CHECK,
-      StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED);
+      StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED,
+      ExecutableAccessorInfoHandling handling = DEFAULT_HANDLING);
 
   static void AddProperty(Handle<JSObject> object,
                           Handle<Name> key,