Enable the chunk storage engine

Summary: Ref T7149. This works now, so enable it.

Test Plan:
  - Uploaded large and small files in Firefox, Safari and Chrome.
  - Uploaded large files with `arc upload`.
  - Stopped/resumed large files with all clients.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7149

Differential Revision: https://secure.phabricator.com/D12079

src/applications/files/query/PhabricatorFileSearchEngine.php

@@ -176,6 +176,10 @@ final class PhabricatorFileSearchEngine
         $item->addIcon('blame', pht('Temporary'));
       }
 
+      if ($file->getIsPartial()) {
+        $item->addIcon('fa-exclamation-triangle orange', pht('Partial'));
+      }
+
       if (isset($highlighted_ids[$id])) {
         $item->setEffect('highlighted');
       }