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

Source/modules/serviceworkers/FetchResponseData.cpp

-// 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 "FetchResponseData.h"
-
-#include "core/fetch/CrossOriginAccessControl.h"
-#include "modules/serviceworkers/FetchHeaderList.h"
-#include "public/platform/WebServiceWorkerResponse.h"
-
-namespace WebCore {
-
-PassRefPtr<FetchResponseData> FetchResponseData::create()
-{
-    // "Unless stated otherwise, a response's url is null, status is 200, status
-    // message is `OK`, header list is an empty header list, and body is null."
-    return adoptRef(new FetchResponseData(DefaultType, 200, "OK"));
-}
-
-PassRefPtr<FetchResponseData> FetchResponseData::createNetworkErrorResponse()
-{
-    // "A network error is a response whose status is always 0, status message
-    // is always the empty byte sequence, header list is aways an empty list,
-    // and body is always null."
-    return adoptRef(new FetchResponseData(ErrorType, 0, ""));
-}
-
-PassRefPtr<FetchResponseData> FetchResponseData::createBasicFilteredResponse()
-{
-    // "A basic filtered response is a filtered response whose type is |basic|,
-    // header list excludes any headers in internal response's header list whose
-    // name is `Set-Cookie` or `Set-Cookie2`."
-    RefPtr<FetchResponseData> response = adoptRef(new FetchResponseData(BasicType, m_status, m_statusMessage));
-    response->m_url = m_url;
-    for (size_t i = 0; i < m_headerList->size(); ++i) {
-        const FetchHeaderList::Header* header = m_headerList->list()[i].get();
-        if (header->first == "set-cookie" || header->first == "set-cookie2")
-            continue;
-        response->m_headerList->append(header->first, header->second);
-    }
-    response->m_blobDataHandle = m_blobDataHandle;
-    response->m_internalResponse = this;
-    return response.release();
-}
-
-PassRefPtr<FetchResponseData> FetchResponseData::createCORSFilteredResponse()
-{
-    // "A CORS filtered response is a filtered response whose type is |CORS|,
-    // header list excludes all headers in internal response's header list,
-    // except those whose name is either one of `Cache-Control`,
-    // `Content-Language`, `Content-Type`, `Expires`, `Last-Modified`, and
-    // `Pragma`, and except those whose name is one of the values resulting from
-    // parsing `Access-Control-Expose-Headers` in internal response's header
-    // list."
-    RefPtr<FetchResponseData> response = adoptRef(new FetchResponseData(CORSType, m_status, m_statusMessage));
-    response->m_url = m_url;
-    HTTPHeaderSet accessControlExposeHeaderSet;
-    String accessControlExposeHeaders;
-    if (m_headerList->get("access-control-expose-headers", accessControlExposeHeaders))
-        parseAccessControlExposeHeadersAllowList(accessControlExposeHeaders, accessControlExposeHeaderSet);
-    for (size_t i = 0; i < m_headerList->size(); ++i) {
-        const FetchHeaderList::Header* header = m_headerList->list()[i].get();
-        if (!isOnAccessControlResponseHeaderWhitelist(header->first) && !accessControlExposeHeaderSet.contains(header->first))
-            continue;
-        response->m_headerList->append(header->first, header->second);
-    }
-    response->m_blobDataHandle = m_blobDataHandle;
-    response->m_internalResponse = this;
-    return response.release();
-}
-
-PassRefPtr<FetchResponseData> FetchResponseData::createOpaqueFilteredResponse()
-{
-    // "An opaque filtered response is a filtered response whose type is
-    // |opaque|, status is 0, status message is the empty byte sequence, header
-    // list is an empty list, and body is null."
-    RefPtr<FetchResponseData> response = adoptRef(new FetchResponseData(OpaqueType, 0, ""));
-    response->m_internalResponse = this;
-    return response.release();
-}
-
-void FetchResponseData::populateWebServiceWorkerResponse(blink::WebServiceWorkerResponse& response)
-{
-    if (m_internalResponse) {
-        m_internalResponse->populateWebServiceWorkerResponse(response);
-        return;
-    }
-    response.setURL(url());
-    response.setStatus(status());
-    response.setStatusText(statusMessage());
-    for (size_t i = 0; i < headerList()->size(); ++i) {
-        const FetchHeaderList::Header* header = headerList()->list()[i].get();
-        response.setHeader(header->first, header->second);
-    }
-    response.setBlobDataHandle(blobDataHandle());
-}
-
-FetchResponseData::FetchResponseData(Type type, unsigned short status, AtomicString statusMessage)
-    : m_type(type)
-    , m_status(status)
-    , m_statusMessage(statusMessage)
-    , m_headerList(FetchHeaderList::create())
-{
-}
-
-} // namespace WebCore