Track original URL when downloading a redirected page

chrome/browser/android/offline_pages/recent_tab_helper.cc

Index: chrome/browser/android/offline_pages/recent_tab_helper.cc
diff --git a/chrome/browser/android/offline_pages/recent_tab_helper.cc b/chrome/browser/android/offline_pages/recent_tab_helper.cc
index a2019a31586b8f1c5fda136110dfc058743c1c1f..e1f83b790de0791a5bbe704e31b10dcf6d3cd179 100644
--- a/chrome/browser/android/offline_pages/recent_tab_helper.cc
+++ b/chrome/browser/android/offline_pages/recent_tab_helper.cc
@@ -355,6 +355,8 @@ void RecentTabHelper::ContinueSnapshotAfterPurge(
   save_page_params.client_id = snapshot_info->client_id;
   save_page_params.proposed_offline_id = snapshot_info->request_id;
   save_page_params.is_background = false;
+  save_page_params.original_url =
+      OfflinePageUtils::GetOriginalURLFromWebContents(web_contents());
   page_model_->SavePage(
       save_page_params, delegate_->CreatePageArchiver(web_contents()),
       base::Bind(&RecentTabHelper::SavePageCallback,