Pass through the response code and headers in Background Fetch

content/browser/background_fetch/background_fetch_request_info.cc

 // Copyright 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/background_fetch/background_fetch_request_info.h"
 
 #include <string>
 
 #include "content/public/browser/download_item.h"
+#include "net/http/http_response_headers.h"
 
 namespace content {
 
 BackgroundFetchRequestInfo::BackgroundFetchRequestInfo(
     int request_index,
     const ServiceWorkerFetchRequest& fetch_request)
     : request_index_(request_index), fetch_request_(fetch_request) {}
 
 BackgroundFetchRequestInfo::~BackgroundFetchRequestInfo() {}
 
 void BackgroundFetchRequestInfo::PopulateDownloadState(
     DownloadItem* download_item,
     DownloadInterruptReason download_interrupt_reason) {
   DCHECK(!download_state_populated_);
 
   download_guid_ = download_item->GetGuid();
   download_state_ = download_item->GetState();
 
+  // The response code, text and headers all are stored in the
+  // net::HttpResponseHeaders object, shared by the |download_item|.
+  if (download_item->GetResponseHeaders()) {
+    const auto& headers = download_item->GetResponseHeaders();
+
+    response_code_ = headers->response_code();
+    response_text_ = headers->GetStatusText();
+
+    size_t iter = 0;
+    std::string name, value;
+
+    while (headers->EnumerateHeaderLines(&iter, &name, &value))
+      response_headers_[name] = value;
+  }
+
   download_state_populated_ = true;
 }
 
 void BackgroundFetchRequestInfo::PopulateResponseFromDownloadItem(
     DownloadItem* download_item) {
   DCHECK(!response_data_populated_);
 
   url_chain_ = download_item->GetUrlChain();
   file_path_ = download_item->GetTargetFilePath();
   file_size_ = download_item->GetReceivedBytes();
   response_time_ = download_item->GetEndTime();
-  response_type_ = download_item->GetMimeType();
 
   response_data_populated_ = true;
 }
 
+int BackgroundFetchRequestInfo::GetResponseCode() const {
+  DCHECK(download_state_populated_);
+  return response_code_;
+}
+
+const std::string& BackgroundFetchRequestInfo::GetResponseText() const {
+  DCHECK(download_state_populated_);
+  return response_text_;
+}
+
+const std::map<std::string, std::string>&
+BackgroundFetchRequestInfo::GetResponseHeaders() const {
+  DCHECK(download_state_populated_);
+  return response_headers_;
+}
+
 const std::vector<GURL>& BackgroundFetchRequestInfo::GetURLChain() const {
   DCHECK(response_data_populated_);
   return url_chain_;
 }
 
 const base::FilePath& BackgroundFetchRequestInfo::GetFilePath() const {
   DCHECK(response_data_populated_);
   return file_path_;
 }
 
 int64_t BackgroundFetchRequestInfo::GetFileSize() const {
   DCHECK(response_data_populated_);
   return file_size_;
 }
 
 const base::Time& BackgroundFetchRequestInfo::GetResponseTime() const {
   DCHECK(response_data_populated_);
   return response_time_;
 }
 
-const std::string& BackgroundFetchRequestInfo::GetResponseType() const {
-  DCHECK(response_data_populated_);
-  return response_type_;
-}
-
 }  // namespace content