Revert of mastermon: report step metrics

Revert of mastermon: report step metrics (patchset #1 id:1 of https://codereview.chromium.org/1507093003/ )

Reason for revert:
Strongly suspected to cause mastermon alerts. https://codereview.chromium.org/1513183005 didn't seem to help.

See https://goto.google.com/wudvc (Google-internal) for more context.

Original issue's description:
> mastermon: report step metrics
> 
> BUG=567699
> 
> Committed: https://chromium.googlesource.com/infra/infra/+/6dc91d3b47be362037abaa0ba00a71a527cd67d9

TBR=akuegel@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=567699
Committed: https://chromium.googlesource.com/infra/infra/+/a78ddde68c6d604fed59678b7c7865afb9a6663e

[Paweł Hajdan Jr., 2015-12-11 12:43:37]

Created Revert of mastermon: report step metrics

[commit-bot: I haz the power, 2015-12-11 12:43:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1515073003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1515073003/1

[commit-bot: I haz the power, 2015-12-11 12:43:48]

Description was changed from

==========
Revert of mastermon: report step metrics (patchset #1 id:1 of
https://codereview.chromium.org/1507093003/ )

Reason for revert:
Strongly suspected to cause mastermon alerts.
https://codereview.chromium.org/1513183005 didn't seem to help.

See https://goto.google.com/wudvc (Google-internal) for more context.

Original issue's description:
> mastermon: report step metrics
> 
> BUG=567699
> 
> Committed:
https://chromium.googlesource.com/infra/infra/+/6dc91d3b47be362037abaa0ba00a7...

TBR=akuegel@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=567699
==========

to

==========
Revert of mastermon: report step metrics (patchset #1 id:1 of
https://codereview.chromium.org/1507093003/ )

Reason for revert:
Strongly suspected to cause mastermon alerts.
https://codereview.chromium.org/1513183005 didn't seem to help.

See https://goto.google.com/wudvc (Google-internal) for more context.

Original issue's description:
> mastermon: report step metrics
> 
> BUG=567699
> 
> Committed:
https://chromium.googlesource.com/infra/infra/+/6dc91d3b47be362037abaa0ba00a7...

TBR=akuegel@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=567699

Committed:
https://chromium.googlesource.com/infra/infra/+/a78ddde68c6d604fed59678b7c786...
==========

[commit-bot: I haz the power, 2015-12-11 12:43:49]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/infra/infra/+/a78ddde68c6d604fed59678b7c786...

[Adrian Kuegel, 2015-12-11 13:34:19]

lgtm