Add support for subresource request fallback in AppCache for the network service..

content/browser/appcache/appcache_url_loader_request.cc

 // Copyright (c) 2017 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 "content/browser/appcache/appcache_url_loader_request.h"
+#include "content/public/common/resource_type.h"
 #include "net/url_request/url_request.h"
 
 namespace content {
 
 // static
 std::unique_ptr<AppCacheURLLoaderRequest> AppCacheURLLoaderRequest::Create(
     const ResourceRequest& request) {
   return std::unique_ptr<AppCacheURLLoaderRequest>(
       new AppCacheURLLoaderRequest(request));
 }
@@ skipping 10 matching lines @@
 
 const GURL& AppCacheURLLoaderRequest::GetFirstPartyForCookies() const {
   return request_.first_party_for_cookies;
 }
 
 const GURL AppCacheURLLoaderRequest::GetReferrer() const {
   return request_.referrer;
 }
 
 bool AppCacheURLLoaderRequest::IsSuccess() const {
-  return false;
+  int response_code = GetResponseCode();
+  return (response_code >= 200 && response_code <= 226);
 }
 
 bool AppCacheURLLoaderRequest::IsCancelled() const {
   return false;
 }
 
 bool AppCacheURLLoaderRequest::IsError() const {
   return false;
 }
 
 int AppCacheURLLoaderRequest::GetResponseCode() const {
+  if (response_.headers)
+    return response_.headers->response_code();
   return 0;
 }
 
 std::string AppCacheURLLoaderRequest::GetResponseHeaderByName(
     const std::string& name) const {
   return std::string();
 }
 
 ResourceRequest* AppCacheURLLoaderRequest::GetResourceRequest() {
   return &request_;
 }
 
+AppCacheURLLoaderRequest* AppCacheURLLoaderRequest::AsURLLoaderRequest() {
+  return this;
+}
+
 AppCacheURLLoaderRequest::AppCacheURLLoaderRequest(
     const ResourceRequest& request)
     : request_(request) {}
 
 }  // namespace content