Start implementing ForeignFetchEvent for foreign fetch events.

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

+// Copyright 2016 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/ForeignFetchEvent.h"
+
+#include "modules/fetch/Request.h"
+#include "modules/serviceworkers/ServiceWorkerGlobalScope.h"
+#include "wtf/RefPtr.h"
+
+namespace blink {
+
+ForeignFetchEvent* ForeignFetchEvent::create()
+{
+    return new ForeignFetchEvent();
+}
+
+ForeignFetchEvent* ForeignFetchEvent::create(const AtomicString& type, const ForeignFetchEventInit& initializer)
+{
+    return new ForeignFetchEvent(type, initializer, nullptr);
+}
+
+ForeignFetchEvent* ForeignFetchEvent::create(const AtomicString& type, const ForeignFetchEventInit& initializer, ForeignFetchRespondWithObserver* observer)
+{
+    return new ForeignFetchEvent(type, initializer, observer);
+}
+
+Request* ForeignFetchEvent::request() const
+{
+    return m_request;
+}
+
+void ForeignFetchEvent::respondWith(ScriptState* scriptState, ScriptPromise scriptPromise, ExceptionState& exceptionState)
+{
+    stopImmediatePropagation();
+    if (m_observer)
+        m_observer->respondWith(scriptState, scriptPromise, exceptionState);
+}
+
+const AtomicString& ForeignFetchEvent::interfaceName() const
+{
+    return EventNames::ForeignFetchEvent;
+}
+
+ForeignFetchEvent::ForeignFetchEvent()
+{
+}
+
+ForeignFetchEvent::ForeignFetchEvent(const AtomicString& type, const ForeignFetchEventInit& initializer, ForeignFetchRespondWithObserver* observer)
+    : ExtendableEvent(type, initializer)
+    , m_observer(observer)
+{
+    if (initializer.hasRequest())
+        m_request = initializer.request();
+}
+
+DEFINE_TRACE(ForeignFetchEvent)
+{
+    visitor->trace(m_observer);
+    visitor->trace(m_request);
+    ExtendableEvent::trace(visitor);
+}
+
+} // namespace blink