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

Source/modules/serviceworkers/Response.h

Index: Source/modules/serviceworkers/Response.h
diff --git a/Source/modules/serviceworkers/Response.h b/Source/modules/serviceworkers/Response.h
index 6a28a19423dcb8c37ee55e72664fcd1af49eb058..ba41b63718f3c3c587f267cd33d58e1c4cac4588 100644
--- a/Source/modules/serviceworkers/Response.h
+++ b/Source/modules/serviceworkers/Response.h
@@ -7,7 +7,8 @@
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ScriptWrappable.h"
-#include "modules/serviceworkers/HeaderMap.h"
+#include "modules/serviceworkers/FetchResponseData.h"
+#include "modules/serviceworkers/Headers.h"
 #include "platform/blob/BlobData.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
@@ -18,30 +19,32 @@ namespace blink { class WebServiceWorkerResponse; }
 namespace WebCore {
 
 class Blob;
+class ExceptionState;
 struct ResponseInit;
 
-class Response FINAL : public ScriptWrappable, public RefCounted<Response> {
+class Response FINAL : public RefCounted<Response>, public ScriptWrappable {
 public:
-    static PassRefPtr<Response> create(Blob*, const Dictionary&);
-    static PassRefPtr<Response> create(Blob*, const ResponseInit&);
-    ~Response() { };
-
-    unsigned short status() const { return m_status; }
-    void setStatus(unsigned short value) { m_status = value; }
+    static PassRefPtr<Response> create(Blob*, const Dictionary&, ExceptionState&);
+    static PassRefPtr<Response> create(Blob*, const ResponseInit&, ExceptionState&);
 
-    String statusText() const { return m_statusText; }
-    void setStatusText(const String& value) { m_statusText = value; }
+    static PassRefPtr<Response> create(PassRefPtr<FetchResponseData>);
+    ~Response() { };
 
-    PassRefPtr<HeaderMap> headers() const;
+    String type() const;
+    String url() const;
+    unsigned short status() const;
+    String statusText() const;
+    PassRefPtr<Headers> headers() const;
 
     void populateWebServiceWorkerResponse(blink::WebServiceWorkerResponse&);
 
 private:
-    Response(PassRefPtr<BlobDataHandle>, const ResponseInit&);
-    unsigned short m_status;
-    String m_statusText;
-    RefPtr<HeaderMap> m_headers;
-    RefPtr<BlobDataHandle> m_blobDataHandle;
+    Response();
+    Response(PassRefPtr<FetchResponseData>);
+
+    RefPtr<FetchResponseData> m_response;
+    RefPtr<Headers> m_headers;
+    // FIXME: Support FetchBodyStream.
 };
 
 } // namespace WebCore