Add LayoutTests for URL list of Response

third_party/WebKit/Source/modules/fetch/testing/WorkerInternalsFetch.h

Index: third_party/WebKit/Source/modules/fetch/testing/WorkerInternalsFetch.h
diff --git a/third_party/WebKit/Source/modules/fetch/testing/WorkerInternalsFetch.h b/third_party/WebKit/Source/modules/fetch/testing/WorkerInternalsFetch.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c3a6cfc602c67f5b9bf8b29c467b47ec5b638e5
--- /dev/null
+++ b/third_party/WebKit/Source/modules/fetch/testing/WorkerInternalsFetch.h
@@ -0,0 +1,26 @@
+// 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.
+
+#ifndef WorkerInternalsFetch_h
+#define WorkerInternalsFetch_h
+
+#include "wtf/Allocator.h"
+#include "wtf/Vector.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class WorkerInternals;
+class Response;
+
+class WorkerInternalsFetch {
+  STATIC_ONLY(WorkerInternalsFetch);
+
+ public:
+  static Vector<String> getInternalResponseURLList(WorkerInternals&, Response*);
+};
+
+}  // namespace blink
+
+#endif  // WorkerInternalsFetch_h