Oilpan: finalization of Permissions and SyncManager not needed.

Source/modules/background_sync/SyncManager.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SyncManager_h
 #define SyncManager_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class SyncRegistrationOptions;
 class ScriptPromise;
 class ScriptState;
 class ServiceWorkerRegistration;
 
-class SyncManager final : public GarbageCollectedFinalized<SyncManager> , public ScriptWrappable {
+class SyncManager final : public GarbageCollected<SyncManager> , public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static SyncManager* create(ServiceWorkerRegistration* registration)
     {
         return new SyncManager(registration);
     }
-    ~SyncManager() { }
 
     unsigned long minAllowablePeriod();
 
     ScriptPromise registerFunction(ScriptState*);
     ScriptPromise registerFunction(ScriptState*, const SyncRegistrationOptions&);
     ScriptPromise getRegistration(blink::ScriptState*, const String&);
     ScriptPromise getRegistrations(ScriptState*);
 
     DECLARE_TRACE();
 
 private:
     explicit SyncManager(ServiceWorkerRegistration*);
 
     Member<ServiceWorkerRegistration> m_registration;
 };
 
 } // namespace blink
 
 #endif // SyncManager_h