Revert of Disable flaky WebNavigationApiTest.CrossProcessHistory.

Revert of Disable flaky WebNavigationApiTest.CrossProcessHistory. (patchset #1 id:1 of https://codereview.chromium.org/2790383002/ )

Reason for revert:
What I believe was the underlying issue has been reverted, so it should be safe to reenable this test back.

Original issue's description:
> Disable flaky WebNavigationApiTest.CrossProcessHistory.
> 
> TBR=nasko@chromium.org
> BUG=708139
> 
> Review-Url: https://codereview.chromium.org/2790383002
> Cr-Commit-Position: refs/heads/master@{#461690}
> Committed: https://chromium.googlesource.com/chromium/src/+/656fccff69eae8da012f0f83bcd3fc89214c5258

TBR=maxmorin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=708139
Review-Url: https://codereview.chromium.org/2830813002
Cr-Commit-Position: refs/heads/master@{#465709}
Committed: https://chromium.googlesource.com/chromium/src/+/ccdcc6ef79a614b1b1c87a78a883d9c5b19ffde2

[nasko, 2017-04-19 18:53:19]

Created Revert of Disable flaky WebNavigationApiTest.CrossProcessHistory.

[nasko, 2017-04-19 18:53:30]

The CQ bit was checked by nasko@chromium.org

[commit-bot: I haz the power, 2017-04-19 18:54:07]

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, 2017-04-19 19:35:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492628010116000, "parent_rev":
"f1fbbd6d02b15123242c4782ca8830048d300e55", "commit_rev":
"ccdcc6ef79a614b1b1c87a78a883d9c5b19ffde2"}

[commit-bot: I haz the power, 2017-04-19 19:35:57]

Description was changed from

==========
Revert of Disable flaky WebNavigationApiTest.CrossProcessHistory. (patchset #1
id:1 of https://codereview.chromium.org/2790383002/ )

Reason for revert:
What I believe was the underlying issue has been reverted, so it should be safe
to reenable this test back.

Original issue's description:
> Disable flaky WebNavigationApiTest.CrossProcessHistory.
> 
> TBR=nasko@chromium.org
> BUG=708139
> 
> Review-Url: https://codereview.chromium.org/2790383002
> Cr-Commit-Position: refs/heads/master@{#461690}
> Committed:
https://chromium.googlesource.com/chromium/src/+/656fccff69eae8da012f0f83bcd3...

TBR=maxmorin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=708139
==========

to

==========
Revert of Disable flaky WebNavigationApiTest.CrossProcessHistory. (patchset #1
id:1 of https://codereview.chromium.org/2790383002/ )

Reason for revert:
What I believe was the underlying issue has been reverted, so it should be safe
to reenable this test back.

Original issue's description:
> Disable flaky WebNavigationApiTest.CrossProcessHistory.
> 
> TBR=nasko@chromium.org
> BUG=708139
> 
> Review-Url: https://codereview.chromium.org/2790383002
> Cr-Commit-Position: refs/heads/master@{#461690}
> Committed:
https://chromium.googlesource.com/chromium/src/+/656fccff69eae8da012f0f83bcd3...

TBR=maxmorin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=708139

Review-Url: https://codereview.chromium.org/2830813002
Cr-Commit-Position: refs/heads/master@{#465709}
Committed:
https://chromium.googlesource.com/chromium/src/+/ccdcc6ef79a614b1b1c87a78a883...
==========

[commit-bot: I haz the power, 2017-04-19 19:35:58]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ccdcc6ef79a614b1b1c87a78a883...

[Roger McFarlane (Chromium), 2017-04-19 21:05:23]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2828903002/ by rogerm@chromium.org.

The reason for reverting is: The flakiness came back upon landing this revert. 

So, reverting the revert..

[Max Morin, 2017-04-20 07:05:14]

lgtm