[ServiceWorker] Make Response class better conformance with the spec.

Source/modules/serviceworkers/FetchResponseData.h

Index: Source/modules/serviceworkers/FetchResponseData.h
diff --git a/Source/modules/serviceworkers/FetchResponseData.h b/Source/modules/serviceworkers/FetchResponseData.h
new file mode 100644
index 0000000000000000000000000000000000000000..5aa588a95f90247d289b66c1d1a61e1af1b56e7c
--- /dev/null
+++ b/Source/modules/serviceworkers/FetchResponseData.h
@@ -0,0 +1,66 @@
+// 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 FetchResponseData_h
+#define FetchResponseData_h
+
+#include "platform/weborigin/KURL.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
+#include "wtf/text/AtomicString.h"
+
+namespace blink { class WebServiceWorkerResponse; }
+
+namespace WebCore {
+
+class BlobDataHandle;
+class FetchHeaderList;
+
+class FetchResponseData : public RefCounted<FetchResponseData> {
+    WTF_MAKE_NONCOPYABLE(FetchResponseData);
+public:
+    // "A response has an associated type which is one of basic, CORS, default,
+    // error, and opaque. Unless stated otherwise, it is default."
+    enum Type { BasicType, CORSType, DefaultType, ErrorType, OpaqueType };
+    // "A response can have an associated termination reason which is one of
+    // end-user abort, fatal, and timeout."
+    enum TerminationReason { EndUserAbortTermination, FatalTermination, TimeoutTermination };
+
+    static PassRefPtr<FetchResponseData> create();
+    static PassRefPtr<FetchResponseData> createNetworkErrorResponse();
+
+    PassRefPtr<FetchResponseData> createBasicFilteredResponse();
+    PassRefPtr<FetchResponseData> createCORSFilteredResponse();
+    PassRefPtr<FetchResponseData> createOpaqueFilteredResponse();
+
+    Type type() const { return m_type; }
+    const KURL& url() const { return m_url; }
+    unsigned short status() const { return m_status; }
+    AtomicString statusMessage() const { return m_statusMessage; }
+    FetchHeaderList* headerList() const { return m_headerList.get(); }
+    PassRefPtr<BlobDataHandle> blobDataHandle() const { return m_blobDataHandle; }
+
+    void setURL(const KURL& url) { m_url = url; }
+    void setStatus(unsigned short status) { m_status = status; }
+    void setStatusMessage(AtomicString statusMessage) { m_statusMessage = statusMessage; }
+    void setBlobDataHandle(PassRefPtr<BlobDataHandle> blobDataHandle) { m_blobDataHandle = blobDataHandle; }
+
+    void populateWebServiceWorkerResponse(blink::WebServiceWorkerResponse&);
+
+private:
+    FetchResponseData(Type, unsigned short, AtomicString);
+
+    Type m_type;
+    OwnPtr<TerminationReason> m_terminationReason;
+    KURL m_url;
+    unsigned short m_status;
+    AtomicString m_statusMessage;
+    RefPtr<FetchHeaderList> m_headerList;
+    RefPtr<BlobDataHandle> m_blobDataHandle;
+    RefPtr<FetchResponseData> m_internalResponse;
+};
+
+} // namespace WebCore
+
+#endif // FetchResponseData_h