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

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

 /*
  * Copyright (C) 2011 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 31 matching lines @@
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 #include <memory>
 #include <stdint.h>
 
 namespace blink {
 
 class BlobDataHandle;
 class KURL;
+class DocumentWebSocketChannel;
 class ExecutionContext;
 class ExecutionContextTask;
 class WebSocketChannelSyncHelper;
 class WorkerGlobalScope;
 class WorkerLoaderProxy;
 
 class WorkerWebSocketChannel final : public WebSocketChannel {
     WTF_MAKE_NONCOPYABLE(WorkerWebSocketChannel);
 public:
     static WebSocketChannel* create(WorkerGlobalScope& workerGlobalScope, WebSocketChannelClient* client, std::unique_ptr<SourceLocation> location)
@@ skipping 53 matching lines @@
         void didStartClosingHandshake() override;
         void didClose(ClosingHandshakeCompletionStatus, unsigned short code, const String& reason) override;
         void didError() override;
 
         // WorkerThreadLifecycleObserver function.
         void contextDestroyed() override;
 
     private:
         CrossThreadWeakPersistent<Bridge> m_bridge;
         RefPtr<WorkerLoaderProxy> m_loaderProxy;
-        Member<WebSocketChannel> m_mainWebSocketChannel;
+        Member<DocumentWebSocketChannel> m_mainWebSocketChannel;

[yhirano, 2016/08/23 04:51:48]

Just out of curiosity, is this change needed?

[nhiroki, 2016/08/23 04:56:45]

Not needed. This is just for improving readability on codesearch. If you prefer
to have a separate CL for this, I'll make it :)

         Member<WebSocketChannelSyncHelper> m_syncHelper;
     };
 
     // Bridge for Peer. Running on the worker thread.
     class Bridge final : public GarbageCollectedFinalized<Bridge> {
         WTF_MAKE_NONCOPYABLE(Bridge);
     public:
         Bridge(WebSocketChannelClient*, WorkerGlobalScope&);
         ~Bridge();
         // SourceLocation parameter may be shown when the connection fails.
@@ skipping 29 matching lines @@
 private:
     WorkerWebSocketChannel(WorkerGlobalScope&, WebSocketChannelClient*, std::unique_ptr<SourceLocation>);
 
     Member<Bridge> m_bridge;
     std::unique_ptr<SourceLocation> m_locationAtConnection;
 };
 
 } // namespace blink
 
 #endif // WorkerWebSocketChannel_h