Make the download's response headers available in the DownloadItem

content/browser/download/download_item_impl.cc

 // Copyright (c) 2012 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.
 
 // File method ordering: Methods in this file are in the same order as
 // in download_item_impl.h, with the following exception: The public
 // interface Start is placed in chronological order with the other
 // (private) routines that together define a DownloadItem's state
 // transitions as the download progresses.  See "Download progression
 // cascade" later in this file.
@@ skipping 199 matching lines @@
       url_chain_(info.url_chain),
       referrer_url_(info.referrer_url),
       site_url_(info.site_url),
       tab_url_(info.tab_url),
       tab_referrer_url_(info.tab_referrer_url),
       suggested_filename_(base::UTF16ToUTF8(info.save_info->suggested_name)),
       forced_file_path_(info.save_info->file_path),
       transition_type_(info.transition_type ? info.transition_type.value()
                                             : ui::PAGE_TRANSITION_LINK),
       has_user_gesture_(info.has_user_gesture),
+      response_code_(info.response_code),
       content_disposition_(info.content_disposition),
       mime_type_(info.mime_type),
       original_mime_type_(info.original_mime_type),
       remote_address_(info.remote_address),
       total_bytes_(info.total_bytes),
       last_reason_(info.result),
       start_tick_(base::TimeTicks::Now()),
       state_(INITIAL_INTERNAL),
       start_time_(info.start_time),
       delegate_(delegate),
@@ skipping 368 matching lines @@
 }
 
 const GURL& DownloadItemImpl::GetTabReferrerUrl() const {
   return tab_referrer_url_;
 }
 
 std::string DownloadItemImpl::GetSuggestedFilename() const {
   return suggested_filename_;
 }
 
+int DownloadItemImpl::GetResponseCode() const {
+  return response_code_;
+}
+
 std::string DownloadItemImpl::GetContentDisposition() const {
   return content_disposition_;
 }
 
 std::string DownloadItemImpl::GetMimeType() const {
   return mime_type_;
 }
 
 std::string DownloadItemImpl::GetOriginalMimeType() const {
   return original_mime_type_;
@@ skipping 410 matching lines @@
   int origin_state = 0;
   bool is_partial = received_bytes_ > 0;
   if (chain_iter != new_create_info.url_chain.end())
     origin_state |= ORIGIN_STATE_ON_RESUMPTION_ADDITIONAL_REDIRECTS;
   if (etag_ != new_create_info.etag ||
       last_modified_time_ != new_create_info.last_modified) {
     received_slices_.clear();
     received_bytes_ = 0;
     origin_state |= ORIGIN_STATE_ON_RESUMPTION_VALIDATORS_CHANGED;
   }
   if (content_disposition_ != new_create_info.content_disposition)

[Peter Beverloo, 2017/04/11 15:10:24]

It feels to me like the response code should be part of this, but it might
trigger for downloads resumed after a browser restart which don't have a
response_code_ since we don't store it. WDYT?

     origin_state |= ORIGIN_STATE_ON_RESUMPTION_CONTENT_DISPOSITION_CHANGED;
   RecordOriginStateOnResumption(is_partial, origin_state);
 
   url_chain_.insert(
       url_chain_.end(), chain_iter, new_create_info.url_chain.end());
   etag_ = new_create_info.etag;
   last_modified_time_ = new_create_info.last_modified;
+  response_code_ = new_create_info.response_code;
   content_disposition_ = new_create_info.content_disposition;
   // It is possible that the previous download attempt failed right before the
   // response is received. Need to reset the MIME type.
   mime_type_ = new_create_info.mime_type;
 
   // Don't update observers. This method is expected to be called just before a
   // DownloadFile is created and Start() is called. The observers will be
   // notified when the download transitions to the IN_PROGRESS state.
 }
 
@@ skipping 1190 matching lines @@
     case RESUME_MODE_USER_CONTINUE:
       return "USER_CONTINUE";
     case RESUME_MODE_USER_RESTART:
       return "USER_RESTART";
   }
   NOTREACHED() << "Unknown resume mode " << mode;
   return "unknown";
 }
 
 }  // namespace content