Install iterator meta objects via utils object.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5866 matching lines @@
 static bool utils_has_been_collected = false;
 
 static void UtilsHasBeenCollected(
     const v8::WeakCallbackInfo<v8::Persistent<v8::Object>>& data) {
   utils_has_been_collected = true;
   data.GetParameter()->Reset();
 }
 
 
 TEST(BootstrappingExports) {
-  FLAG_expose_natives_as = "natives";
+  // Expose utils object and delete it to observe that it is indeed
+  // being garbage-collected.
+  FLAG_expose_natives_as = "utils";
   CcTest::InitializeVM();
   v8::Isolate* isolate = CcTest::isolate();
 
   if (Snapshot::HaveASnapshotToStartFrom(CcTest::i_isolate())) return;
 
   utils_has_been_collected = false;
 
   v8::Persistent<v8::Object> utils;
 
   {
     v8::HandleScope scope(isolate);
-    v8::Handle<v8::Object> natives =
-        CcTest::global()->Get(v8_str("natives"))->ToObject(isolate);
-    utils.Reset(isolate, natives->Get(v8_str("utils"))->ToObject(isolate));
-    natives->Delete(v8_str("utils"));
+    v8::Local<v8::String> name = v8_str("utils");
+    utils.Reset(isolate, CcTest::global()->Get(name)->ToObject(isolate));
+    CcTest::global()->Delete(name);
   }
 
   utils.SetWeak(&utils, UtilsHasBeenCollected,
                 v8::WeakCallbackType::kParameter);
 
   CcTest::heap()->CollectAllAvailableGarbage("fire weak callbacks");
 
   CHECK(utils_has_been_collected);
 }
 
@@ skipping 402 matching lines @@
   // The CollectGarbage call above starts sweeper threads.
   // The crash will happen if the following two functions
   // are called before sweeping finishes.
   heap->StartIncrementalMarking();
   heap->FinalizeIncrementalMarkingIfComplete("test");
 }
 
 
 }  // namespace internal
 }  // namespace v8