[modules] Implement @@iterator on namespace objects.

src/builtins/builtins.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_BUILTINS_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 648 matching lines @@
   /* ES6 section 19.4.3.3 Symbol.prototype.valueOf ( ) */                     \
   TFJ(SymbolPrototypeValueOf, 1)                                              \
                                                                               \
   /* TypedArray */                                                            \
   CPP(TypedArrayPrototypeBuffer)                                              \
   /* ES6 section 22.2.3.2 get %TypedArray%.prototype.byteLength */            \
   TFJ(TypedArrayPrototypeByteLength, 1)                                       \
   /* ES6 section 22.2.3.3 get %TypedArray%.prototype.byteOffset */            \
   TFJ(TypedArrayPrototypeByteOffset, 1)                                       \
   /* ES6 section 22.2.3.18 get %TypedArray%.prototype.length */               \
-  TFJ(TypedArrayPrototypeLength, 1)
+  TFJ(TypedArrayPrototypeLength, 1)                                           \
+                                                                              \
+  CPP(ModuleNamespaceIterator)                                                \
+  CPP(FixedArrayIteratorNext)
 
 #define IGNORE_BUILTIN(...)
 
 #define BUILTIN_LIST_ALL(V) BUILTIN_LIST(V, V, V, V, V, V, V)
 
 #define BUILTIN_LIST_C(V)                                            \
   BUILTIN_LIST(V, V, IGNORE_BUILTIN, IGNORE_BUILTIN, IGNORE_BUILTIN, \
                IGNORE_BUILTIN, IGNORE_BUILTIN)
 
 #define BUILTIN_LIST_A(V)                                                      \
@@ skipping 129 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_