Annotate ScriptWrappable-embedding singletons.

third_party/WebKit/Source/core/dom/custom/V0CustomElementProcessingStack.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 23 matching lines @@
 #include "core/dom/custom/V0CustomElementScheduler.h"
 
 namespace blink {
 
 size_t V0CustomElementProcessingStack::s_elementQueueStart = 0;
 
 // The base of the stack has a null sentinel value.
 size_t V0CustomElementProcessingStack::s_elementQueueEnd = kNumSentinels;
 
 V0CustomElementProcessingStack& V0CustomElementProcessingStack::instance() {
+  ALLOW_UNSAFE_SINGLETON()
   DEFINE_STATIC_LOCAL(V0CustomElementProcessingStack, instance,
                       (new V0CustomElementProcessingStack));
   return instance;
 }
 
 // Dispatches callbacks when popping the processing stack.
 void V0CustomElementProcessingStack::processElementQueueAndPop() {
   instance().processElementQueueAndPop(s_elementQueueStart, s_elementQueueEnd);
 }
 
@@ skipping 34 matching lines @@
 
   m_flattenedProcessingStack.push_back(callbackQueue);
   ++s_elementQueueEnd;
 }
 
 DEFINE_TRACE(V0CustomElementProcessingStack) {
   visitor->trace(m_flattenedProcessingStack);
 }
 
 }  // namespace blink