[Files app] Fix wrong removal of .bind() by lebab

These lines were submitted in CL:1490352.

Reported the bug to lebab project:
https://github.com/lebab/lebab/issues/287

Bug: 778674
Change-Id: I09b8b6acbde72f4e0af36c5dd4f8084ac3aef27c
Reviewed-on: https://chromium-review.googlesource.com/c/1493638
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Auto-Submit: Luciano Pacheco <lucmult@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636696}
2 files changed