Revert of wptserve: Import the latest revision of wptserve-related files.

Revert of wptserve: Import the latest revision of wptserve-related files. (patchset #1 id:1 of https://codereview.chromium.org/2476653002/ )

Reason for revert:
Broke WPTServe bots on Linux and Windows

Original issue's description:
> wptserve: Import the latest revision of wptserve-related files.
>
> This revision contains fixes for the 'alias' feature.
>
> * Tools/Scripts/webkitpy/thirdparty/wpt/checkout.sh
>   - Show the HEAD revision.  It is helpful if WPTHeads contains "master"s to
>     check out.
>   - Add a workaround of a bug of xargs on macOS.
>
> This CL doesn't affect production, and doesn't affect main layout test bots.
>
> BUG=627008
>
> Committed: https://crrev.com/b4c1192626a5d180457403d2c97ebf5232ddfb81
> Cr-Commit-Position: refs/heads/master@{#429733}

TBR=qyearsley@chromium.org,jsbell@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=627008
Committed: https://crrev.com/35e60781345021466f84a7a80ac928fd48c90441
Cr-Commit-Position: refs/heads/master@{#429826}

[tkent, 2016-11-04 07:48:20]

The CQ bit was checked by tkent@chromium.org

[tkent, 2016-11-04 07:48:21]

Created Revert of wptserve: Import the latest revision of wptserve-related
files.

[commit-bot: I haz the power, 2016-11-04 07:48:42]

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, 2016-11-04 07:49:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-04 07:51:10]

Description was changed from

==========
Revert of wptserve: Import the latest revision of wptserve-related files.
(patchset #1 id:1 of https://codereview.chromium.org/2476653002/ )

Reason for revert:
Broke WPTServe bots on Linux and Windows

Original issue's description:
> wptserve: Import the latest revision of wptserve-related files.
> 
> This revision contains fixes for the 'alias' feature.
> 
> * Tools/Scripts/webkitpy/thirdparty/wpt/checkout.sh
>   - Show the HEAD revision.  It is helpful if WPTHeads contains "master"s to
>     check out.
>   - Add a workaround of a bug of xargs on macOS.
> 
> This CL doesn't affect production, and doesn't affect main layout test bots.
> 
> BUG=627008
> 
> Committed: https://crrev.com/b4c1192626a5d180457403d2c97ebf5232ddfb81
> Cr-Commit-Position: refs/heads/master@{#429733}

TBR=qyearsley@chromium.org,jsbell@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=627008
==========

to

==========
Revert of wptserve: Import the latest revision of wptserve-related files.
(patchset #1 id:1 of https://codereview.chromium.org/2476653002/ )

Reason for revert:
Broke WPTServe bots on Linux and Windows

Original issue's description:
> wptserve: Import the latest revision of wptserve-related files.
>
> This revision contains fixes for the 'alias' feature.
>
> * Tools/Scripts/webkitpy/thirdparty/wpt/checkout.sh
>   - Show the HEAD revision.  It is helpful if WPTHeads contains "master"s to
>     check out.
>   - Add a workaround of a bug of xargs on macOS.
>
> This CL doesn't affect production, and doesn't affect main layout test bots.
>
> BUG=627008
>
> Committed: https://crrev.com/b4c1192626a5d180457403d2c97ebf5232ddfb81
> Cr-Commit-Position: refs/heads/master@{#429733}

TBR=qyearsley@chromium.org,jsbell@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=627008

Committed: https://crrev.com/35e60781345021466f84a7a80ac928fd48c90441
Cr-Commit-Position: refs/heads/master@{#429826}
==========

[commit-bot: I haz the power, 2016-11-04 07:51:11]

Patchset 1 (id:??) landed as
https://crrev.com/35e60781345021466f84a7a80ac928fd48c90441
Cr-Commit-Position: refs/heads/master@{#429826}

[qyearsley, 2016-11-04 17:23:48]

lgtm