[PROTOTYPE] ServiceWorker: Add ServiceWorkerMessageEvent impl.

Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp

Index: Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp b/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f29263e5d0d66a04ee8ba1fef7674505649a794e
--- /dev/null
+++ b/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
@@ -0,0 +1,60 @@
+// 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/serviceworkers/ServiceWorkerMessageEvent.h"
+
+#include "bindings/core/v8/ExceptionMessages.h"
+#include "bindings/core/v8/ExceptionState.h"
+
+namespace blink {
+
+ServiceWorkerMessageEventInit::ServiceWorkerMessageEventInit()
+{
+}
+
+ServiceWorkerMessageEvent::ServiceWorkerMessageEvent()
+{
+}
+
+ServiceWorkerMessageEvent::ServiceWorkerMessageEvent(const AtomicString& type, const ServiceWorkerMessageEventInit& initializer)
+    : Event(type, initializer)
+    , m_origin(initializer.origin)
+    , m_lastEventId(initializer.lastEventId)
+    , m_source(initializer.source)
+    , m_ports(adoptPtrWillBeNoop(new MessagePortArray(initializer.ports)))
+{
+}
+
+ServiceWorkerMessageEvent::~ServiceWorkerMessageEvent()
+{
+}
+
+void ServiceWorkerMessageEvent::initServiceWorkerMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, const ServiceWorkerOrMessagePort& source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
+{
+    if (dispatched())
+        return;
+
+    initEvent(type, canBubble, cancelable);
+
+    m_origin = origin;
+    m_lastEventId = lastEventId;
+    m_source = source;
+    m_ports = ports;
+}
+
+const AtomicString& ServiceWorkerMessageEvent::interfaceName() const
+{
+    return EventNames::ServiceWorkerMessageEvent;
+}
+
+DEFINE_TRACE(ServiceWorkerMessageEvent)
+{
+#if ENABLE(OILPAN)
+    visitor->trace(m_ports);
+#endif
+    Event::trace(visitor);
+}
+
+} // namespace blink