Make WebServiceWorkerResponse support ResponseType

public/platform/WebServiceWorkerResponseType.h

Index: public/platform/WebServiceWorkerResponseType.h
diff --git a/public/platform/WebServiceWorkerResponseType.h b/public/platform/WebServiceWorkerResponseType.h
new file mode 100644
index 0000000000000000000000000000000000000000..773c5f03f70548387e82360b5522d291301633c1
--- /dev/null
+++ b/public/platform/WebServiceWorkerResponseType.h
@@ -0,0 +1,21 @@
+// 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.
+
+#ifndef WebServiceWorkerResponseType_h
+#define WebServiceWorkerResponseType_h
+
+namespace blink {
+
+enum WebServiceWorkerResponseType {
+    WebServiceWorkerResponseTypeBasic,
+    WebServiceWorkerResponseTypeCORS,
+    WebServiceWorkerResponseTypeDefault,
+    WebServiceWorkerResponseTypeError,
+    WebServiceWorkerResponseTypeOpaque,
+    WebServiceWorkerResponseTypeLast = WebServiceWorkerResponseTypeOpaque
+};
+
+} // namespace blink
+
+#endif // WebServiceWorkerResponseType_h