Fix a crash after removing button from site settings popup

Fix a crash after removing button from site settings popup

When the "x" button next to a USB device permission is clicked the
permission is revoked and the button should disappear. Instead of trying
to remove the button from the Views hierarchy (which GridLayout doesn't
seem to notice, causing a crash) this patch just removes visibility from
the button.

BUG=707423
Review-Url: https://codereview.chromium.org/2804883002
Cr-Commit-Position: refs/heads/master@{#462296}
(cherry picked from commit d74f628bb38bb54be59013dc01b13d7abb7b3423)

Review-Url: https://codereview.chromium.org/2804153002 .
Cr-Commit-Position: refs/branch-heads/3029@{#620}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/8058517532b691bcf51b677007749882403b2e7b

[Reilly Grant (use Gerrit), 2017-04-07 01:08:15]

Description was changed from

==========
Fix a crash after removing button from site settings popup

When the "x" button next to a USB device permission is clicked the
permission is revoked and the button should disappear. Instead of trying
to remove the button from the Views hierarchy (which GridLayout doesn't
seem to notice, causing a crash) this patch just removes visibility from
the button.

BUG=707423

Review-Url: https://codereview.chromium.org/2804883002
Cr-Commit-Position: refs/heads/master@{#462296}
(cherry picked from commit d74f628bb38bb54be59013dc01b13d7abb7b3423)
==========

to

==========
Fix a crash after removing button from site settings popup

When the "x" button next to a USB device permission is clicked the
permission is revoked and the button should disappear. Instead of trying
to remove the button from the Views hierarchy (which GridLayout doesn't
seem to notice, causing a crash) this patch just removes visibility from
the button.

BUG=707423

Review-Url: https://codereview.chromium.org/2804883002
Cr-Commit-Position: refs/heads/master@{#462296}
(cherry picked from commit d74f628bb38bb54be59013dc01b13d7abb7b3423)

Review-Url: https://codereview.chromium.org/2804153002 .
Cr-Commit-Position: refs/branch-heads/3029@{#620}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/8058517532b691bcf51b67700774...
==========

[Reilly Grant (use Gerrit), 2017-04-07 01:08:17]

Committed patchset #1 (id:1) manually as
8058517532b691bcf51b677007749882403b2e7b.