Add expectation for flaky http/tests/xmlhttprequest/redirect-cross-origin-post.html

Add expectation for flaky http/tests/xmlhttprequest/redirect-cross-origin-post.html

The test is flaky since
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7%20%28dbg%29/builds/5366/steps/webkit_tests/logs/stdio
on WebKit Win7 (dbg).

BUG=605525
TBR=dtseng@chromium.org

Committed: https://crrev.com/46786d3ac001458d17d3b4f897060e88746c1a0e
Cr-Commit-Position: refs/heads/master@{#388772}

[kjellander_chromium, 2016-04-21 13:23:24]

The CQ bit was checked by kjellander@chromium.org

[commit-bot: I haz the power, 2016-04-21 13:23:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1909553003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1909553003/1

[commit-bot: I haz the power, 2016-04-21 14:51:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:34:41]

Description was changed from

==========
Add expectation for flaky
http/tests/xmlhttprequest/redirect-cross-origin-post.html

The test is flaky since
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7%20%28dbg%...
on WebKit Win7 (dbg).

BUG=605525
TBR=dtseng@chromium.org
==========

to

==========
Add expectation for flaky
http/tests/xmlhttprequest/redirect-cross-origin-post.html

The test is flaky since
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7%20%28dbg%...
on WebKit Win7 (dbg).

BUG=605525
TBR=dtseng@chromium.org

Committed: https://crrev.com/46786d3ac001458d17d3b4f897060e88746c1a0e
Cr-Commit-Position: refs/heads/master@{#388772}
==========

[commit-bot: I haz the power, 2016-04-22 19:34:42]

Patchset 1 (id:??) landed as
https://crrev.com/46786d3ac001458d17d3b4f897060e88746c1a0e
Cr-Commit-Position: refs/heads/master@{#388772}