Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerContainer.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * 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
@@ skipping 40 matching lines @@
 class WebServiceWorker;
 class WebServiceWorkerProvider;
 class WebServiceWorkerRegistration;
 
 class MODULES_EXPORT ServiceWorkerContainer final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<ServiceWorkerContainer>
     , public ContextLifecycleObserver
     , public WebServiceWorkerProviderClient {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(ServiceWorkerContainer);
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ServiceWorkerContainer);
+    USING_GARBAGE_COLLECTED_MIXIN(ServiceWorkerContainer);
 public:
     using RegistrationCallbacks = WebServiceWorkerProvider::WebServiceWorkerRegistrationCallbacks;
 
     static ServiceWorkerContainer* create(ExecutionContext*);
     ~ServiceWorkerContainer();
 
     void willBeDetachedFromFrame();
 
     DECLARE_VIRTUAL_TRACE();
 
@@ skipping 26 matching lines @@
     ReadyProperty* createReadyProperty();
 
     WebServiceWorkerProvider* m_provider;
     Member<ServiceWorker> m_controller;
     Member<ReadyProperty> m_ready;
 };
 
 } // namespace blink
 
 #endif // ServiceWorkerContainer_h