Add flaky expectations for XHR and WebSocket tests.

Add flaky expectations for XHR and WebSocket tests.

BUG=457273, 525975, 417181
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201397

[yhirano, 2015-08-28 10:29:04]

yhirano@chromium.org changed reviewers:
+ ricea@chromium.org

[Adam Rice, 2015-08-28 11:43:33]

lgtm

[yhirano, 2015-08-28 11:44:45]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2015-08-28 11:44:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322663003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322663003/1

[commit-bot: I haz the power, 2015-08-28 11:46:09]

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

[commit-bot: I haz the power, 2015-08-28 11:46:09]

Try jobs failed on following builders:
  ios_rel_device_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)

[yhirano, 2015-08-28 12:04:18]

The CQ bit was checked by yhirano@chromium.org

[yhirano, 2015-08-28 12:04:18]

The patchset sent to the CQ was uploaded after l-g-t-m from ricea@chromium.org
Link to the patchset: https://codereview.chromium.org/1322663003/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2015-08-28 12:04:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322663003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322663003/20001

[commit-bot: I haz the power, 2015-08-28 12:44:41]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201397