Add terminateServiceWorker method for layout tests - blink side

Source/modules/serviceworkers/testing/InternalsServiceWorker.cpp

Index: Source/modules/serviceworkers/testing/InternalsServiceWorker.cpp
diff --git a/Source/modules/serviceworkers/testing/InternalsServiceWorker.cpp b/Source/modules/serviceworkers/testing/InternalsServiceWorker.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b87a3fdd736cc0b693978b487628aeea971fc27a
--- /dev/null
+++ b/Source/modules/serviceworkers/testing/InternalsServiceWorker.cpp
@@ -0,0 +1,17 @@
+// Copyright 2014 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/testing/InternalsServiceWorker.h"
+
+#include "modules/serviceworkers/ServiceWorker.h"
+
+namespace blink {
+
+void InternalsServiceWorker::terminateServiceWorker(Internals& internals, ServiceWorker* worker)
+{
+    worker->internalsTerminate();
+}
+
+} // namespace blink