Annotate ScriptWrappable-embedding singletons.

third_party/WebKit/Source/modules/mediasource/MediaSourceRegistry.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "modules/mediasource/MediaSourceRegistry.h"
 
 #include "modules/mediasource/MediaSource.h"
 #include "platform/weborigin/KURL.h"
 
 namespace blink {
 
 MediaSourceRegistry& MediaSourceRegistry::registry() {
   DCHECK(isMainThread());
+  ALLOW_UNSAFE_SINGLETON()
   DEFINE_STATIC_LOCAL(MediaSourceRegistry, instance, ());
   return instance;
 }
 
 void MediaSourceRegistry::registerURL(SecurityOrigin*,
                                       const KURL& url,
                                       URLRegistrable* registrable) {
   DCHECK_EQ(&registrable->registry(), this);
   DCHECK(isMainThread());
 
@@ skipping 17 matching lines @@
 URLRegistrable* MediaSourceRegistry::lookup(const String& url) {
   DCHECK(isMainThread());
   return url.isNull() ? nullptr : m_mediaSources.get(url);
 }
 
 MediaSourceRegistry::MediaSourceRegistry() {
   HTMLMediaSource::setRegistry(this);
 }
 
 }  // namespace blink