EventSender<T> singletons are better off on the Oilpan heap.

third_party/WebKit/Source/core/html/HTMLLinkElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 104 matching lines @@
         return;
     }
     if (state == ParseHeight && i > start) {
         int height = charactersToInt(value + start, i - start);
         iconSizes.append(IntSize(width, height));
     }
 }
 
 static LinkEventSender& linkLoadEventSender()
 {
-    DEFINE_STATIC_LOCAL(LinkEventSender, sharedLoadEventSender, (EventTypeNames::load));
-    return sharedLoadEventSender;
+    DEFINE_STATIC_LOCAL(OwnPtrWillBePersistent<LinkEventSender>, sharedLoadEventSender, (LinkEventSender::create(EventTypeNames::load)));
+    return *sharedLoadEventSender;
 }
 
 void HTMLLinkElement::parseSizesAttribute(const AtomicString& value, Vector<IntSize>& iconSizes)
 {
     ASSERT(iconSizes.isEmpty());
     if (value.isEmpty())
         return;
     if (value.is8Bit())
         parseSizes(value.characters8(), value.length(), iconSizes);
     else
@@ skipping 15 matching lines @@
     return adoptRefWillBeNoop(new HTMLLinkElement(document, createdByParser));
 }
 
 HTMLLinkElement::~HTMLLinkElement()
 {
 #if !ENABLE(OILPAN)
     m_sizes->setObserver(nullptr);
     m_link.clear();
     if (inDocument())
         document().styleEngine().removeStyleSheetCandidateNode(this);
+    linkLoadEventSender().cancelEvent(this);
 #endif
-    linkLoadEventSender().cancelEvent(this);
 }
 
 void HTMLLinkElement::parseAttribute(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& value)
 {
     if (name == relAttr) {
         m_relAttribute = LinkRelAttribute(value);
         m_relList->setRelValues(value);
         process();
     } else if (name == hrefAttr) {
         // Log href attribute before logging resource fetching in process().
@@ skipping 592 matching lines @@
         removePendingSheet();
 }
 
 DEFINE_TRACE(LinkStyle)
 {
     visitor->trace(m_sheet);
     LinkResource::trace(visitor);
 }
 
 } // namespace blink