Use remove_build_metadata.py on all the trybots.

Use remove_build_metadata.py on all the trybots.

BUG=

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=292727

[Sébastien Marchand, 2014-10-29 14:46:46]

Patchset #1 (id:1) has been deleted

[Sébastien Marchand, 2014-10-29 14:46:53]

Patchset #1 (id:20001) has been deleted

[Sébastien Marchand, 2014-10-29 14:53:32]

sebmarchand@chromium.org changed reviewers:
+ maruel@chromium.org

[Sébastien Marchand, 2014-10-29 14:53:33]

Not sure that this is the best place to put this, but I'm not so familiar with
this side of the infrastructure, PTAL.

[M-A Ruel, 2014-10-29 18:09:18]

Let's try it there, then roll out to chromium.py too.

lgtm

Note that this CL will conflicts a bit with
https://codereview.chromium.org/688473003/

[Sébastien Marchand, 2014-10-29 18:40:31]

The CQ bit was checked by sebmarchand@chromium.org

[commit-bot: I haz the power, 2014-10-29 18:41:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/654543008/40001

[commit-bot: I haz the power, 2014-10-29 18:42:50]

Committed patchset #1 (id:40001) as 292727

[Sébastien Marchand, 2014-10-29 19:03:24]

A revert of this CL (patchset #1 id:40001) has been created in
https://codereview.chromium.org/692623002/ by sebmarchand@chromium.org.

The reason for reverting is: The remove_build_metadata step shouldn't be a
failing step for now (it should just give a warning if zap_timestamp.exe fail
for some targets), I'll change that an I'll reland this one..