[CrOS Tether] Remove notifications when they have been tapped.

[CrOS Tether] Remove notifications when they have been tapped.

Previously, the notifications stayed around after they were tapped; this made it possible to interact with them later at a time when they may be stale.

BUG=672263, 730247
Review-Url: https://codereview.chromium.org/2953973002
Cr-Commit-Position: refs/heads/master@{#481756}
Committed: https://chromium.googlesource.com/chromium/src/+/8c84bfe3673e65b0a912f0bff2f726073caface5

[Kyle Horimoto, 2017-06-22 22:56:10]

khorimoto@chromium.org changed reviewers:
+ stevenjb@chromium.org

[stevenjb, 2017-06-23 00:10:39]

lgtm

[Kyle Horimoto, 2017-06-23 00:13:06]

The CQ bit was checked by khorimoto@chromium.org

[commit-bot: I haz the power, 2017-06-23 00:13:41]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-23 01:03:39]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498176786898740, "parent_rev":
"aa87813942a324671466d574bc8567c0f74a7749", "commit_rev":
"8c84bfe3673e65b0a912f0bff2f726073caface5"}

[commit-bot: I haz the power, 2017-06-23 01:03:53]

Description was changed from

==========
[CrOS Tether] Remove notifications when they have been tapped.

Previously, the notifications stayed around after they were tapped; this made it
possible to interact with them later at a time when they may be stale.

BUG=672263,730247
==========

to

==========
[CrOS Tether] Remove notifications when they have been tapped.

Previously, the notifications stayed around after they were tapped; this made it
possible to interact with them later at a time when they may be stale.

BUG=672263,730247

Review-Url: https://codereview.chromium.org/2953973002
Cr-Commit-Position: refs/heads/master@{#481756}
Committed:
https://chromium.googlesource.com/chromium/src/+/8c84bfe3673e65b0a912f0bff2f7...
==========

[commit-bot: I haz the power, 2017-06-23 01:03:54]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8c84bfe3673e65b0a912f0bff2f7...