Avoid unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/core/dom/custom/CustomElementReactionStack.cpp

 // Copyright 2016 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 "core/dom/custom/CustomElementReactionStack.h"
 
 #include "core/dom/Element.h"
 #include "core/dom/custom/CustomElementReactionQueue.h"
 
 namespace blink {
 
 // TODO(dominicc): Consider using linked heap structures, avoiding
 // finalizers, to make short-lived entries fast.
 
 CustomElementReactionStack::CustomElementReactionStack()
 {
 }
 
-CustomElementReactionStack::~CustomElementReactionStack()
-{
-}
-
 DEFINE_TRACE(CustomElementReactionStack)
 {
     visitor->trace(m_map);
     visitor->trace(m_stack);
 }
 
 void CustomElementReactionStack::push()
 {
     m_stack.append(nullptr);
 }
@@ skipping 25 matching lines @@
     CustomElementReactionQueue* reactions = m_map.get(element);
     if (!reactions) {
         reactions = new CustomElementReactionQueue();
         m_map.add(element, reactions);
     }
 
     reactions->add(reaction);
 }
 
 } // namespace blink