Ensure DOMWrapperWorld always exists in all webkit_unit_tests

Source/modules/indexeddb/IDBRequestTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 54 matching lines @@
 };
 
 NullExecutionContext::NullExecutionContext()
     : m_queue(adoptPtr(new NullEventQueue()))
 {
 }
 
 class IDBRequestTest : public testing::Test {
 public:
     IDBRequestTest()
-        : m_handleScope(v8::Isolate::GetCurrent())
-        , m_scope(v8::Context::New(v8::Isolate::GetCurrent()))
+        : m_scope(V8BindingTestScope::create(v8::Isolate::GetCurrent()))
         , m_context(adoptRef(new NullExecutionContext()))
     {
     }
 
     ExecutionContext* executionContext()
     {
         return m_context.get();
     }
 
 private:
-    v8::HandleScope m_handleScope;
-    v8::Context::Scope m_scope;
+    OwnPtr<V8BindingTestScope> m_scope;
     RefPtr<ExecutionContext> m_context;
 };
 
 TEST_F(IDBRequestTest, EventsAfterStopping)
 {
     IDBTransaction* transaction = 0;
     RefPtr<IDBRequest> request = IDBRequest::create(executionContext(), IDBAny::createUndefined(), transaction);
     EXPECT_EQ(request->readyState(), "pending");
     executionContext()->stopActiveDOMObjects();
 
@@ skipping 70 matching lines @@
         OwnPtr<MockWebIDBDatabase> backend = MockWebIDBDatabase::create();
         RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(executionContext(), callbacks, transactionId, version);
         EXPECT_EQ(request->readyState(), "pending");
 
         executionContext()->stopActiveDOMObjects();
         request->onSuccess(backend.release(), metadata);
     }
 }
 
 } // namespace