Revert of Return Windows error code when create-process fails.

Revert of Return Windows error code when create-process fails. (patchset #14 id:260001 of https://codereview.chromium.org/1247993002/ )

Reason for revert:
Looks like some other file needs to be added to the .gn as well.  <sigh>

Original issue's description:
> Return Windows error code when create-process fails.
>
> COULD_NOT_CREATE_PROCESS makes up about 10% of the setup errors; include the actual DWORD result code returned by ::CreateProcess by placing all result information into the proper location of the Registry for reading by Omaha.
>
> BUG=
>
> Committed: https://crrev.com/135f5f669574bd07eaedaf6b57503984aeb13be8
> Cr-Commit-Position: refs/heads/master@{#341938}
>
> Committed: https://crrev.com/41465440adac9c4ca529d42bc685eedb640c8eb7
> Cr-Commit-Position: refs/heads/master@{#342528}

TBR=grt@chromium.org,ganesh@chromium.org,robertshield@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/7a8f0640ac49e7a0eaa79605e7b57d8fd772d344
Cr-Commit-Position: refs/heads/master@{#342530}

[bcwhite, 2015-08-08 16:12:23]

Created Revert of Return Windows error code when create-process fails.

[commit-bot: I haz the power, 2015-08-08 16:12:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1285473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1285473002/1

[commit-bot: I haz the power, 2015-08-08 16:12:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-08 16:13:38]

Patchset 1 (id:??) landed as
https://crrev.com/7a8f0640ac49e7a0eaa79605e7b57d8fd772d344
Cr-Commit-Position: refs/heads/master@{#342530}