GitLab

Changes SmbService::Mount from returning a base::File::error as a result
to an SmbMountResult so that we can provide more valuable mount result
feedback to users.

Bug: chromium:757625
Change-Id: I8a7372529031a1ea6829f62119964b34c4a26465
Reviewed-on: https://chromium-review.googlesource.com/1058041Reviewed-by: Scott Chen <scottchen@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Bailey Berro <baileyberro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559296}