Create a internal, global native context used only for generated code stubs

test/cctest/test-object-observe.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 693 matching lines @@
     LocalContext context2(CcTest::isolate());
     context2->SetSecurityToken(foo);
     context2->Global()->Set(String::NewFromUtf8(CcTest::isolate(), "obj"),
                             object);
     CompileRun("function observer() {};"
                "Object.observe(obj, observer, ['foo', 'bar', 'baz']);"
                "Object.unobserve(obj, observer);");
   }
 
   CcTest::isolate()->ContextDisposedNotification();
-  CheckSurvivingGlobalObjectsCount(1);
+  CheckSurvivingGlobalObjectsCount(2);
 }
 
 
 TEST(DontLeakContextOnGetNotifier) {
   HandleScope scope(CcTest::isolate());
   Handle<Value> foo = String::NewFromUtf8(CcTest::isolate(), "foo");
   LocalContext context(CcTest::isolate());
   context->SetSecurityToken(foo);
   CompileRun("var obj = {};");
   Handle<Value> object = CompileRun("obj");
   {
     HandleScope scope(CcTest::isolate());
     LocalContext context2(CcTest::isolate());
     context2->SetSecurityToken(foo);
     context2->Global()->Set(String::NewFromUtf8(CcTest::isolate(), "obj"),
                             object);
     CompileRun("Object.getNotifier(obj);");
   }
 
   CcTest::isolate()->ContextDisposedNotification();
-  CheckSurvivingGlobalObjectsCount(1);
+  CheckSurvivingGlobalObjectsCount(2);
 }
 
 
 TEST(DontLeakContextOnNotifierPerformChange) {
   HandleScope scope(CcTest::isolate());
   Handle<Value> foo = String::NewFromUtf8(CcTest::isolate(), "foo");
   LocalContext context(CcTest::isolate());
   context->SetSecurityToken(foo);
   CompileRun("var obj = {};");
   Handle<Value> object = CompileRun("obj");
   Handle<Value> notifier = CompileRun("Object.getNotifier(obj)");
   {
     HandleScope scope(CcTest::isolate());
     LocalContext context2(CcTest::isolate());
     context2->SetSecurityToken(foo);
     context2->Global()->Set(String::NewFromUtf8(CcTest::isolate(), "obj"),
                             object);
     context2->Global()->Set(String::NewFromUtf8(CcTest::isolate(), "notifier"),
                             notifier);
     CompileRun("var obj2 = {};"
                "var notifier2 = Object.getNotifier(obj2);"
                "notifier2.performChange.call("
                    "notifier, 'foo', function(){})");
   }
 
   CcTest::isolate()->ContextDisposedNotification();
-  CheckSurvivingGlobalObjectsCount(1);
+  CheckSurvivingGlobalObjectsCount(2);
 }
 
 
 static void ObserverCallback(const FunctionCallbackInfo<Value>& args) {
   *static_cast<int*>(Handle<External>::Cast(args.Data())->Value()) =
       Handle<Array>::Cast(args[0])->Length();
 }
 
 
 TEST(ObjectObserveCallsCppFunction) {
@@ skipping 105 matching lines @@
   i::Isolate* isolate = CcTest::i_isolate();
   i::HandleScope scope(isolate);
   LocalContext env;
   int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
   global_use_counts = use_counts;
   CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
   CompileRun("var obj = {}");
   CompileRun("Object.getNotifier(obj)");
   CHECK_EQ(1, use_counts[v8::Isolate::kObjectObserve]);
 }