Get signals working in the EXTRA_DATA section of MHTML

chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc

Index: chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc
diff --git a/chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc b/chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc
index 14f6b882c40b9e7805c6d8d3d298c07268cf4124..501acf69f1d7e191e93932b4b57c97261e3d9552 100644
--- a/chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc
+++ b/chrome/browser/android/offline_pages/offline_page_request_job_unittest.cc
@@ -215,6 +215,7 @@ class TestOfflinePageArchiver : public OfflinePageArchiver {
 
   void CreateArchive(const base::FilePath& archives_dir,
                      const CreateArchiveParams& create_archive_params,
+                     const std::string& signal_data,
                      const CreateArchiveCallback& callback) override {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
@@ -505,9 +506,11 @@ void OfflinePageRequestJobTest::SavePage(
   save_page_params.url = url;
   save_page_params.client_id = client_id;
   save_page_params.original_url = original_url;
+  std::string extra_data;
   OfflinePageModelFactory::GetForBrowserContext(profile())->SavePage(
       save_page_params,
       std::move(archiver),
+      extra_data,
       base::Bind(&OfflinePageRequestJobTest::OnSavePageDone,
                  base::Unretained(this)));
   RunUntilIdle();