[proof-of-concept] SW thread independent of the main thread

third_party/WebKit/Source/modules/serviceworkers/IsolatedWorkerThread.cpp

+// 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.
+
+#include "modules/serviceworkers/IsolatedWorkerThread.h"
+
+#include "core/workers/WorkerBackingThread.h"
+#include "platform/TraceEvent.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/workers/WorkerThreadStartupData.h"
+#include "modules/serviceworkers/ServiceWorkerGlobalScope.h"
+#include "modules/serviceworkers/IsolatedWorkerReportingProxy.h"
+#include "modules/EventTargetModulesNames.h"
+
+namespace blink {
+
+std::unique_ptr<IsolatedWorkerThread> IsolatedWorkerThread::create(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy)
+{
+    return wrapUnique(new IsolatedWorkerThread(workerLoaderProxy, workerReportingProxy));
+}
+
+IsolatedWorkerThread::IsolatedWorkerThread(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy)
+    : WorkerThread(workerLoaderProxy, workerReportingProxy, false)
+    , m_workerBackingThread(WorkerBackingThread::create("IsolatedWorker Thread"))
+{
+}
+
+IsolatedWorkerThread::~IsolatedWorkerThread()
+{
+}
+
+void IsolatedWorkerThread::clearWorkerBackingThread()
+{
+    m_workerBackingThread = nullptr;
+}
+
+WorkerOrWorkletGlobalScope* IsolatedWorkerThread::createWorkerGlobalScope(std::unique_ptr<WorkerThreadStartupData> startupData)
+{
+    return ServiceWorkerGlobalScope::create(this, std::move(startupData));
+}
+
+} // namespace blink