ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/core/workers/InProcessWorkerBase.h

 // Copyright 2015 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.
 
 #ifndef InProcessWorkerBase_h
 #define InProcessWorkerBase_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/MessagePort.h"
 #include "core/dom/SuspendableObject.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
 #include "core/workers/AbstractWorker.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class ExceptionState;
 class ExecutionContext;
 class InProcessWorkerMessagingProxy;
 class WorkerScriptLoader;
 
 // Base class for workers that operate in the same process as the document that
 // creates them.
-class CORE_EXPORT InProcessWorkerBase : public AbstractWorker,
-                                        public ActiveScriptWrappable {
+class CORE_EXPORT InProcessWorkerBase
+    : public AbstractWorker,
+      public ActiveScriptWrappable<InProcessWorkerBase> {
  public:
   ~InProcessWorkerBase() override;
 
   void postMessage(ExecutionContext*,
                    PassRefPtr<SerializedScriptValue> message,
                    const MessagePortArray&,
                    ExceptionState&);
   static bool canTransferArrayBuffersAndImageBitmaps() { return true; }
   void terminate();
 
@@ skipping 25 matching lines @@
 
   RefPtr<WorkerScriptLoader> m_scriptLoader;
 
   // The proxy outlives the worker to perform thread shutdown.
   InProcessWorkerMessagingProxy* m_contextProxy;
 };
 
 }  // namespace blink
 
 #endif  // InProcessWorkerBase_h