Ensure proper finalization of garbage-collected types.

Source/modules/crypto/WorkerGlobalScopeCrypto.cpp

 /*
  * 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 22 matching lines @@
 
 #include "core/dom/ExecutionContext.h"
 #include "modules/crypto/WorkerCrypto.h"
 
 namespace WebCore {
 
 WorkerGlobalScopeCrypto::WorkerGlobalScopeCrypto()
 {
 }
 
-WorkerGlobalScopeCrypto::~WorkerGlobalScopeCrypto()
-{
-}
-
 const char* WorkerGlobalScopeCrypto::supplementName()
 {
     return "WorkerGlobalScopeCrypto";
 }
 
 WorkerGlobalScopeCrypto& WorkerGlobalScopeCrypto::from(WillBeHeapSupplementable<WorkerGlobalScope>& context)
 {
     WorkerGlobalScopeCrypto* supplement = static_cast<WorkerGlobalScopeCrypto*>(WillBeHeapSupplement<WorkerGlobalScope>::from(context, supplementName()));
     if (!supplement) {
         supplement = new WorkerGlobalScopeCrypto();
@@ skipping 13 matching lines @@
         m_crypto = WorkerCrypto::create();
     return m_crypto.get();
 }
 
 void WorkerGlobalScopeCrypto::trace(Visitor* visitor)
 {
     visitor->trace(m_crypto);
 }
 
 } // namespace WebCore