[TTS] Fix testLongPressSwipeExpand flakiness.

[TTS] Fix testLongPressSwipeExpand flakiness.

Rework testLongPressSwipeExpand to use the newer way of starting
a search and a more robust way to expand the panel.

Hopefully that this makes this test less flaky.

BUG=671627
Committed: https://crrev.com/8dea2db07061597d1cc4b30e087286ebe5e90383
Cr-Commit-Position: refs/heads/master@{#437121}

[Donn Denman, 2016-12-07 23:08:22]

donnd@chromium.org changed reviewers:
+ twellington@chromium.org

[Donn Denman, 2016-12-07 23:08:22]

Theresa, PTAL.

[Theresa, 2016-12-07 23:51:13]

The CQ bit was checked by twellington@chromium.org

[Theresa, 2016-12-07 23:51:13]

lgtm

[commit-bot: I haz the power, 2016-12-07 23:51:53]

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, 2016-12-08 01:41:02]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481154673427490, "parent_rev":
"08a30cbf39a3363fb210977b291693c105c64301", "commit_rev":
"bb53f2a3105cc320b33227713a54a8ac9e0e3140"}

[commit-bot: I haz the power, 2016-12-08 01:41:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-08 01:44:23]

Description was changed from

==========
[TTS] Fix testLongPressSwipeExpand flakiness.

Rework testLongPressSwipeExpand to use the newer way of starting
a search and a more robust way to expand the panel.

Hopefully that this makes this test less flaky.

BUG=671627
==========

to

==========
[TTS] Fix testLongPressSwipeExpand flakiness.

Rework testLongPressSwipeExpand to use the newer way of starting
a search and a more robust way to expand the panel.

Hopefully that this makes this test less flaky.

BUG=671627

Committed: https://crrev.com/8dea2db07061597d1cc4b30e087286ebe5e90383
Cr-Commit-Position: refs/heads/master@{#437121}
==========

[commit-bot: I haz the power, 2016-12-08 01:44:23]

Patchset 1 (id:??) landed as
https://crrev.com/8dea2db07061597d1cc4b30e087286ebe5e90383
Cr-Commit-Position: refs/heads/master@{#437121}