Storage manager: Hide "Offline files" when Google Drive volume is not mounted.

Storage manager: Hide "Offline files" when Google Drive volume is not mounted.

The "Google Drive" volume in Files app does not always exist.
(e.g. Guest session, Supervised user, or disabled by setting.)
Showing "Offline files" in storage manager doesn't make sense in such cases and
causes a crash.
We should hide "Offline files" item when Google Drive volume doesn't exist.

BUG=629347
TEST=manually tested on a guest user and a supervised user.
TBR=dbeam@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2184083002
Cr-Commit-Position: refs/heads/master@{#408315}
(cherry picked from commit ad2b1015a4d81c54dfbd79f47ca2d58fbe7722d1)

Committed: https://chromium.googlesource.com/chromium/src/+/6e99b5785da15f9d858c29548c5b46d8ac4b389a

[fukino, 2016-08-01 06:19:23]

Description was changed from

==========
Storage manager: Hide "Offline files" when Google Drive volume is not mounted.

The "Google Drive" volume in Files app does not always exist.
(e.g. Guest session, Supervised user, or disabled by setting.)
Showing "Offline files" in storage manager doesn't make sense in such cases and
causes a crash.
We should hide "Offline files" item when Google Drive volume doesn't exist.

BUG=629347
TEST=manually tested on a guest user and a supervised user.
TBR=dbeam@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2184083002
Cr-Commit-Position: refs/heads/master@{#408315}
(cherry picked from commit ad2b1015a4d81c54dfbd79f47ca2d58fbe7722d1)
==========

to

==========
Storage manager: Hide "Offline files" when Google Drive volume is not mounted.

The "Google Drive" volume in Files app does not always exist.
(e.g. Guest session, Supervised user, or disabled by setting.)
Showing "Offline files" in storage manager doesn't make sense in such cases and
causes a crash.
We should hide "Offline files" item when Google Drive volume doesn't exist.

BUG=629347
TEST=manually tested on a guest user and a supervised user.
TBR=dbeam@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2184083002
Cr-Commit-Position: refs/heads/master@{#408315}
(cherry picked from commit ad2b1015a4d81c54dfbd79f47ca2d58fbe7722d1)

Committed:
https://chromium.googlesource.com/chromium/src/+/6e99b5785da15f9d858c29548c5b...
==========

[fukino, 2016-08-01 06:19:25]

Committed patchset #1 (id:1) manually as
6e99b5785da15f9d858c29548c5b46d8ac4b389a.