Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix some minor issues that caused DumpAccessibilityEvents tests to fail
or behave flakily. Re-enable several tests and add many more with a
goal of covering all possible Mac notifications with tests.

This is part of a larger effort to fire fewer events from Blink
and fire them in platform-specific code instead. Increasing
test coverage will help with this.

BUG=719030, 699438
Review-Url: https://codereview.chromium.org/2897943003
Cr-Commit-Position: refs/heads/master@{#474971}
Committed: https://chromium.googlesource.com/chromium/src/+/2751e50876e2591e8268c124001b58dabfab6828

[dmazzoni, 2017-05-22 17:07:57]

The CQ bit was checked by dmazzoni@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-22 17:08:28]

Dry run: CQ is trying da patch.

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

[dmazzoni, 2017-05-22 17:51:20]

Description was changed from

==========
Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix some minor issues that caused DumpAccessibilityEvents tests to fail
or behave flakily. Re-enable several tests and add many more with a
goal of covering all possible Mac notifications with tests.

BUG=719030
==========

to

==========
Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix some minor issues that caused DumpAccessibilityEvents tests to fail
or behave flakily. Re-enable several tests and add many more with a
goal of covering all possible Mac notifications with tests.

This is part of a larger effort to fire fewer events from Blink
and fire them in platform-specific code instead. Increasing
test coverage will help with this.

BUG=719030,699438
==========

[dmazzoni, 2017-05-22 17:51:20]

dmazzoni@chromium.org changed reviewers:
+ nektar@chromium.org

[commit-bot: I haz the power, 2017-05-22 18:30:50]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-22 18:30:50]

Dry run: This issue passed the CQ dry run.

[nektarios, 2017-05-25 17:48:58]

lgtm

[dmazzoni, 2017-05-25 20:43:28]

The CQ bit was checked by dmazzoni@chromium.org

[commit-bot: I haz the power, 2017-05-25 20:44:14]

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, 2017-05-25 22:23:10]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-25 22:23:12]

Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[dmazzoni, 2017-05-26 06:52:49]

The CQ bit was checked by dmazzoni@chromium.org

[dmazzoni, 2017-05-26 06:52:49]

The patchset sent to the CQ was uploaded after l-g-t-m from nektar@chromium.org
Link to the patchset: https://codereview.chromium.org/2897943003/#ps20001
(title: "Rebaseline one more windows test")

[commit-bot: I haz the power, 2017-05-26 06:53:19]

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, 2017-05-26 09:03:15]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1495781569538940,
"parent_rev": "ee6e4b4ccc884117e4e7069b69d953306be9d7b1", "commit_rev":
"2751e50876e2591e8268c124001b58dabfab6828"}

[commit-bot: I haz the power, 2017-05-26 09:03:28]

Description was changed from

==========
Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix some minor issues that caused DumpAccessibilityEvents tests to fail
or behave flakily. Re-enable several tests and add many more with a
goal of covering all possible Mac notifications with tests.

This is part of a larger effort to fire fewer events from Blink
and fire them in platform-specific code instead. Increasing
test coverage will help with this.

BUG=719030,699438
==========

to

==========
Fix DumpAccessibilityEvents tests on Mac and improve test coverage

Fix some minor issues that caused DumpAccessibilityEvents tests to fail
or behave flakily. Re-enable several tests and add many more with a
goal of covering all possible Mac notifications with tests.

This is part of a larger effort to fire fewer events from Blink
and fire them in platform-specific code instead. Increasing
test coverage will help with this.

BUG=719030,699438

Review-Url: https://codereview.chromium.org/2897943003
Cr-Commit-Position: refs/heads/master@{#474971}
Committed:
https://chromium.googlesource.com/chromium/src/+/2751e50876e2591e8268c124001b...
==========

[commit-bot: I haz the power, 2017-05-26 09:03:29]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/2751e50876e2591e8268c124001b...