workers: Move core worker functionality into InProcessWorkerBase.

Source/core/workers/WorkerBase.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 WorkerBase_h
+#define WorkerBase_h
+
+#include "core/CoreExport.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/WorkerScriptLoaderClient.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Forward.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefPtr.h"
+#include "wtf/text/AtomicStringHash.h"
+
+namespace blink {
+
+class ExceptionState;
+class ExecutionContext;
+class WorkerGlobalScopeProxy;
+class WorkerScriptLoader;
+
+class CORE_EXPORT WorkerBase : public AbstractWorker, private WorkerScriptLoaderClient {

[kinuko, 2015/04/09 08:11:34]

Could this be called InProcessWorkerBase or something that implies it's a base
class only for in-process ones?

[sadrul, 2015/04/09 18:53:40]

Done.

+public:
+    virtual ~WorkerBase();
+
+    void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
+    bool initialize(ExecutionContext*, const String&, ExceptionState&);

[kinuko, 2015/04/09 08:11:34]

Looks like this could be protected.

[sadrul, 2015/04/09 18:53:40]

Done.

+    void terminate();
+
+    void stop() override;
+    bool hasPendingActivity() const override;

[kinuko, 2015/04/09 08:11:34]

Please comment that they're ActiveDOMObject overrides.

[sadrul, 2015/04/09 18:53:40]

Done.

+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
+
+    DECLARE_VIRTUAL_TRACE();
+
+protected:
+    explicit WorkerBase(ExecutionContext*);
+    virtual WorkerGlobalScopeProxy* createWorkerGlobalScopeProxy(ExecutionContext*) = 0;

[kinuko, 2015/04/09 08:11:34]

Please document.

[sadrul, 2015/04/09 18:53:40]

Done.

+
+private:
+    // WorkerScriptLoaderClient callbacks
+    void didReceiveResponse(unsigned long identifier, const ResourceResponse&) override;
+    void notifyFinished() override;
+
+    RefPtr<WorkerScriptLoader> m_scriptLoader;
+    WorkerGlobalScopeProxy* m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
+};
+
+} // namespace blink
+
+#endif // WorkerBase_h