Use DownloadItem directly in DownloadProtectionService.

chrome/browser/download/download_shelf_context_menu.cc

Index: chrome/browser/download/download_shelf_context_menu.cc
diff --git a/chrome/browser/download/download_shelf_context_menu.cc b/chrome/browser/download/download_shelf_context_menu.cc
index 33e92338ebfd780f30d4424802b26c65a7d9526c..dc420af9ca0358a7a38b7a3e2b9b6c0c77c251f1 100644
--- a/chrome/browser/download/download_shelf_context_menu.cc
+++ b/chrome/browser/download/download_shelf_context_menu.cc
@@ -150,10 +150,7 @@ void DownloadShelfContextMenu::ExecuteCommand(int command_id) {
       DownloadProtectionService* protection_service =
           (sb_service ? sb_service->download_protection_service() : NULL);
       if (protection_service) {
-        protection_service->ShowDetailsForDownload(
-            DownloadProtectionService::DownloadInfo::FromDownloadItem(
-                *download_item_),
-            navigator_);
+        protection_service->ShowDetailsForDownload(*download_item_, navigator_);
       }
 #else
       // Should only be getting invoked if we are using safe browsing.