Remove unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/modules/fetch/FetchManager.cpp

 // Copyright 2014 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.
 
 #include "modules/fetch/FetchManager.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8ThrowException.h"
@@ skipping 689 matching lines @@
 {
     return new FetchManager(executionContext);
 }
 
 FetchManager::FetchManager(ExecutionContext* executionContext)
     : ContextLifecycleObserver(executionContext)
     , m_isStopped(false)
 {
 }
 
-FetchManager::~FetchManager()
-{
-}
-
 ScriptPromise FetchManager::fetch(ScriptState* scriptState, FetchRequestData* request)
 {
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     request->setContext(WebURLRequest::RequestContextFetch);
 
     Loader* loader = Loader::create(getExecutionContext(), this, resolver, request, scriptState->world().isIsolatedWorld());
     m_loaders.add(loader);
     loader->start();
@@ skipping 14 matching lines @@
     loader->dispose();
 }
 
 DEFINE_TRACE(FetchManager)
 {
     visitor->trace(m_loaders);
     ContextLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink