Fix flaky NewTabPageTestCase.testOmnibox

Fix flaky NewTabPageTestCase.testOmnibox

[google_landing_controller scrolledToTop] is set at the begining of
animation.
This make taps done just after another tap flaky.
Add a wait on animateHeader to wait until animation is finished.

BUG=None

Committed: https://crrev.com/5c105cf0d1aadeb1bb3ff7eafcb72d84bc432e20
Cr-Commit-Position: refs/heads/master@{#440966}

[Olivier, 2016-12-29 16:42:41]

olivierrobin@chromium.org changed reviewers:
+ justincohen@google.com, marq@chromium.org

[justincohen, 2016-12-29 17:24:20]

justincohen@chromium.org changed reviewers:
+ justincohen@chromium.org

[justincohen, 2016-12-29 17:24:21]

lgtm

[Olivier, 2016-12-29 17:28:05]

The CQ bit was checked by olivierrobin@chromium.org

[commit-bot: I haz the power, 2016-12-29 17:28:18]

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, 2016-12-29 17:36:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483032485387040, "parent_rev":
"1a96a8a57ff8ef582bb9acdde52fe1148fa8b5ef", "commit_rev":
"d1026bbd01619d5e59924011ae5a866d89a359aa"}

[commit-bot: I haz the power, 2016-12-29 17:37:23]

Description was changed from

==========
Fix flaky NewTabPageTestCase.testOmnibox

[google_landing_controller scrolledToTop] is set at the begining of
animation.
This make taps done just after another tap flaky.
Add a wait on animateHeader to wait until animation is finished.

BUG=None
==========

to

==========
Fix flaky NewTabPageTestCase.testOmnibox

[google_landing_controller scrolledToTop] is set at the begining of
animation.
This make taps done just after another tap flaky.
Add a wait on animateHeader to wait until animation is finished.

BUG=None

Review-Url: https://codereview.chromium.org/2606023003
==========

[commit-bot: I haz the power, 2016-12-29 17:37:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2017-01-02 15:52:33]

Description was changed from

==========
Fix flaky NewTabPageTestCase.testOmnibox

[google_landing_controller scrolledToTop] is set at the begining of
animation.
This make taps done just after another tap flaky.
Add a wait on animateHeader to wait until animation is finished.

BUG=None

Review-Url: https://codereview.chromium.org/2606023003
==========

to

==========
Fix flaky NewTabPageTestCase.testOmnibox

[google_landing_controller scrolledToTop] is set at the begining of
animation.
This make taps done just after another tap flaky.
Add a wait on animateHeader to wait until animation is finished.

BUG=None

Committed: https://crrev.com/5c105cf0d1aadeb1bb3ff7eafcb72d84bc432e20
Cr-Commit-Position: refs/heads/master@{#440966}
==========

[commit-bot: I haz the power, 2017-01-02 15:52:34]

Patchset 1 (id:??) landed as
https://crrev.com/5c105cf0d1aadeb1bb3ff7eafcb72d84bc432e20
Cr-Commit-Position: refs/heads/master@{#440966}