[WONT COMMIT] WebSocket: Signal when worker thread lifecycle context is destroyed

third_party/WebKit/Source/modules/websockets/WorkerWebSocketChannel.cpp

 /*
  * Copyright (C) 2011, 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 347 matching lines @@
 
 void Peer::didError()
 {
     ASSERT(isMainThread());
     m_loaderProxy->postTaskToWorkerGlobalScope(BLINK_FROM_HERE, createCrossThreadTask(&workerGlobalScopeDidError, m_bridge));
 }
 
 void Peer::contextDestroyed()
 {
     DCHECK(isMainThread());
-    if (m_mainWebSocketChannel) {
-        m_mainWebSocketChannel->disconnect();
-        m_mainWebSocketChannel = nullptr;
-    }
+    disconnect();
     m_bridge = nullptr;
 }
 
 DEFINE_TRACE(Peer)
 {
     visitor->trace(m_mainWebSocketChannel);
     visitor->trace(m_syncHelper);
     WebSocketChannelClient::trace(visitor);
     WorkerThreadLifecycleObserver::trace(visitor);
 }
@@ skipping 117 matching lines @@
 }
 
 DEFINE_TRACE(Bridge)
 {
     visitor->trace(m_client);
     visitor->trace(m_workerGlobalScope);
     visitor->trace(m_syncHelper);
 }
 
 } // namespace blink