Not for review - Rebase of crrev.com/62833003

Source/core/workers/UIWorker.h

Index: Source/core/workers/UIWorker.h
diff --git a/Source/core/workers/Worker.h b/Source/core/workers/UIWorker.h
similarity index 67%
copy from Source/core/workers/Worker.h
copy to Source/core/workers/UIWorker.h
index 42392a11ec021877279200768a957f06f511f61a..29a59c1c36136fa4eb1919f92965fdeb0f702318 100644
--- a/Source/core/workers/Worker.h
+++ b/Source/core/workers/UIWorker.h
@@ -24,14 +24,15 @@
  *
  */
 
-#ifndef Worker_h
-#define Worker_h
+#ifndef UIWorker_h
+#define UIWorker_h
 
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/MessagePort.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
 #include "core/workers/AbstractWorker.h"
+#include "core/workers/Worker.h"
 #include "core/workers/WorkerScriptLoaderClient.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -46,36 +47,21 @@ class ExecutionContext;
 class WorkerGlobalScopeProxy;
 class WorkerScriptLoader;
 
-class Worker final : public AbstractWorker, private WorkerScriptLoaderClient {
+class UIWorker final : public Worker {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<Worker> create(ExecutionContext*, const String& url, ExceptionState&);
-    virtual ~Worker();
+    static PassRefPtrWillBeRawPtr<UIWorker> create(ExecutionContext*, const String& url, ExceptionState&);
+    virtual ~UIWorker();
 
     virtual const AtomicString& interfaceName() const override;
 
-    void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
-
-    void terminate();
-
-    virtual void stop() override;
-    virtual bool hasPendingActivity() const override;
-
-    DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
-
-    virtual void trace(Visitor*) override;
+    virtual bool isUIWorker() const override { return true; }
 
 private:
-    explicit Worker(ExecutionContext*);
-
-    // WorkerScriptLoaderClient callbacks
-    virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&) override;
-    virtual void notifyFinished() override;
+    explicit UIWorker(ExecutionContext*);
 
-    RefPtr<WorkerScriptLoader> m_scriptLoader;
-    WorkerGlobalScopeProxy* m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
 };
 
 } // namespace blink
 
-#endif // Worker_h
+#endif // UIWorker_h