GitLab

As of now, when we mount a zip file we maintain mounted entries through
retainEntry private method and use that information to restore them upon
device restart or session login. Because retainEntry method does not work
under incognito mode we return an error message if retainEntry is called.
Incognito mode does not retain changes made in its session and therefore
we skip calls that would otherwise call retainEntry method.

As a result, Zip Archiver works in incognito/guest mode.

Bug: 607078
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I9220eea4ed9ea8b9e873698d44cd6e167194b071
Reviewed-on: https://chromium-review.googlesource.com/663002
Commit-Queue: Klemen Kozjek <klemenko@google.com>
Reviewed-by: Tomasz Mikolajewski <mtomasz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#502171}