Set the Content-Type and Content-Length headers for BG 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"
 
@@ skipping 18 matching lines @@
 }
 
 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;
 }
 
 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