Get signals working in the EXTRA_DATA section of MHTML

components/offline_pages/core/offline_page_model_impl.cc

 // Copyright 2016 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 "components/offline_pages/core/offline_page_model_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/bind.h"
@@ skipping 320 matching lines @@
   observers_.AddObserver(observer);
 }
 
 void OfflinePageModelImpl::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void OfflinePageModelImpl::SavePage(
     const SavePageParams& save_page_params,
     std::unique_ptr<OfflinePageArchiver> archiver,
+    const std::vector<std::string>& signal_data,
     const SavePageCallback& callback) {
   DCHECK(is_loaded_);
 
   // Skip saving the page that is not intended to be saved, like local file
   // page.
   if (!OfflinePageModel::CanSaveURL(save_page_params.url)) {
     InformSavePageDone(callback, SavePageResult::SKIPPED,
                        save_page_params.client_id, kInvalidOfflineId);
     return;
   }
 
   // The web contents is not available if archiver is not created and passed.
   if (!archiver.get()) {
     InformSavePageDone(callback, SavePageResult::CONTENT_UNAVAILABLE,
                        save_page_params.client_id, kInvalidOfflineId);
     return;
   }
 
   // If we already have an offline id, use it.  If not, generate one.
   int64_t offline_id = save_page_params.proposed_offline_id;
   if (offline_id == kInvalidOfflineId)
     offline_id = GenerateOfflineId();
 
   OfflinePageArchiver::CreateArchiveParams create_archive_params;
   // If the page is being saved in the background, we should try to remove the
   // popup overlay that obstructs viewing the normal content.
   create_archive_params.remove_popup_overlay = save_page_params.is_background;
   archiver->CreateArchive(
-      archives_dir_, create_archive_params,
+      archives_dir_, create_archive_params, signal_data,
       base::Bind(&OfflinePageModelImpl::OnCreateArchiveDone,
                  weak_ptr_factory_.GetWeakPtr(), save_page_params, offline_id,
                  GetCurrentTime(), callback));
   pending_archivers_.push_back(std::move(archiver));
 }
 
 void OfflinePageModelImpl::MarkPageAccessed(int64_t offline_id) {
   RunWhenLoaded(base::Bind(&OfflinePageModelImpl::MarkPageAccessedWhenLoadDone,
                            weak_ptr_factory_.GetWeakPtr(), offline_id));
 }
@@ skipping 712 matching lines @@
   }
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, task);
 }
 
 base::Time OfflinePageModelImpl::GetCurrentTime() const {
   return testing_clock_ ? testing_clock_->Now() : base::Time::Now();
 }
 
 }  // namespace offline_pages