Annotate ScriptWrappable-embedding singletons.

third_party/WebKit/Source/core/dom/custom/V0CustomElementMicrotaskDispatcher.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 "core/dom/custom/V0CustomElementMicrotaskDispatcher.h"
 
 #include "bindings/core/v8/Microtask.h"
 #include "core/dom/custom/V0CustomElementCallbackQueue.h"
 #include "core/dom/custom/V0CustomElementMicrotaskImportStep.h"
 #include "core/dom/custom/V0CustomElementProcessingStack.h"
 #include "core/dom/custom/V0CustomElementScheduler.h"
 
 namespace blink {
 
 static const V0CustomElementCallbackQueue::ElementQueueId kMicrotaskQueueId = 0;
 
 V0CustomElementMicrotaskDispatcher::V0CustomElementMicrotaskDispatcher()
     : m_hasScheduledMicrotask(false), m_phase(Quiescent) {}
 
 V0CustomElementMicrotaskDispatcher&
 V0CustomElementMicrotaskDispatcher::instance() {
+  ALLOW_UNSAFE_SINGLETON()
   DEFINE_STATIC_LOCAL(V0CustomElementMicrotaskDispatcher, instance,
                       (new V0CustomElementMicrotaskDispatcher));
   return instance;
 }
 
 void V0CustomElementMicrotaskDispatcher::enqueue(
     V0CustomElementCallbackQueue* queue) {
   ensureMicrotaskScheduledForElementQueue();
   queue->setOwner(kMicrotaskQueueId);
   m_elements.push_back(queue);
@@ skipping 40 matching lines @@
   m_elements.clear();
   V0CustomElementScheduler::microtaskDispatcherDidFinish();
   m_phase = Quiescent;
 }
 
 DEFINE_TRACE(V0CustomElementMicrotaskDispatcher) {
   visitor->trace(m_elements);
 }
 
 }  // namespace blink