ReadDirectory calls for empty directories should not return an error.

BUG=chromium:222205
TEST=Reading from a device with an empty directory does not return an error.

Change-Id: Ie7ab89f0f2cb997923c90664f84e89502fcc1da4
Reviewed-on: https://gerrit.chromium.org/gerrit/45900
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Tested-by: Lei Zhang <thestig@chromium.org>
1 file changed