Annotate ScriptWrappable-embedding singletons.

third_party/WebKit/Source/core/events/EventDispatcher.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) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 66 matching lines @@
 
 void EventDispatcher::dispatchSimulatedClick(
     Node& node,
     Event* underlyingEvent,
     SimulatedClickMouseEventOptions mouseEventOptions,
     SimulatedClickCreationScope creationScope) {
   // This persistent vector doesn't cause leaks, because added Nodes are removed
   // before dispatchSimulatedClick() returns. This vector is here just to
   // prevent the code from running into an infinite recursion of
   // dispatchSimulatedClick().
+  ALLOW_UNSAFE_SINGLETON()
   DEFINE_STATIC_LOCAL(HeapHashSet<Member<Node>>,
                       nodesDispatchingSimulatedClicks,
                       (new HeapHashSet<Member<Node>>));
 
   if (isDisabledFormControl(&node))
     return;
 
   if (nodesDispatchingSimulatedClicks.contains(&node))
     return;
 
@@ skipping 210 matching lines @@
   // events to open select boxes.
   if (!m_event->isTrusted() && m_event->isMouseEvent() &&
       m_event->type() == EventTypeNames::mousedown &&
       isHTMLSelectElement(*m_node)) {
     UseCounter::count(m_node->document(),
                       UseCounter::UntrustedMouseDownEventDispatchedToSelect);
   }
 }
 
 }  // namespace blink