Initial implementation of bindings and basic classes for worklets.

third_party/WebKit/Source/modules/worklet/Worklet.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 "config.h"
+#include "modules/worklet/Worklet.h"
+
+#include "modules/worklet/WorkletGlobalScope.h"
+
+namespace blink {
+
+// static
+Worklet* Worklet::create(ExecutionContext* executionContext)
+{
+    return new Worklet(executionContext);
+}
+
+Worklet::Worklet(ExecutionContext* executionContext)
+    : ActiveDOMObject(executionContext)
+    , m_workletGlobalScope(WorkletGlobalScope::create(executionContext->url(), executionContext->userAgent(), v8::Isolate::GetCurrent()))
+{
+    suspendIfNeeded();
+}
+
+DEFINE_TRACE(Worklet)
+{
+#if ENABLE(OILPAN)
+    m_workletGlobalScope->trace(visitor);
+#endif
+    ActiveDOMObject::trace(visitor);
+}
+
+} // namespace blink