[gn] Switch win clang bot to gn

[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true

Committed: https://crrev.com/1740587772bbd1ffb7b79a90deb16519e8d47588
Cr-Commit-Position: refs/heads/master@{#39156}

[Michael Achenbach, 2016-09-05 09:38:56]

Description was changed from

==========
[gn] Switch win clang bot to gn

BUG=
==========

to

==========
[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true
==========

[Michael Achenbach, 2016-09-05 09:38:56]

machenbach@chromium.org changed reviewers:
+ jochen@chromium.org, vogelheim@chromium.org

[Michael Achenbach, 2016-09-05 09:41:15]

PTAL. Flying rather blind with this one. Trybot doesn't exist. But the bot is
nearly fyi-only in v8 and was just recently added. So there was no gyp-config
evolution that could have diverted from chromium.

[jochen (gone - plz use gerrit), 2016-09-05 09:43:58]

lgtm

[Michael Achenbach, 2016-09-05 10:47:18]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2016-09-05 10:47:27]

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, 2016-09-05 10:54:17]

Description was changed from

==========
[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true
==========

to

==========
[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true
==========

[commit-bot: I haz the power, 2016-09-05 10:54:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-05 10:55:03]

Description was changed from

==========
[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true
==========

to

==========
[gn] Switch win clang bot to gn

BUG=chromium:474921
NOTRY=true

Committed: https://crrev.com/1740587772bbd1ffb7b79a90deb16519e8d47588
Cr-Commit-Position: refs/heads/master@{#39156}
==========

[commit-bot: I haz the power, 2016-09-05 10:55:04]

Patchset 1 (id:??) landed as
https://crrev.com/1740587772bbd1ffb7b79a90deb16519e8d47588
Cr-Commit-Position: refs/heads/master@{#39156}

[Michael Achenbach, 2016-09-05 11:07:36]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2311853002/ by machenbach@chromium.org.

The reason for reverting is: Fails compilation:
https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang.