Revert of Revert of Turn on job-based recompilation

Revert of Revert of Turn on job-based recompilation (patchset #1 id:1 of https://codereview.chromium.org/791033007/)

Reason for revert:
attempt reland after landing a fix

Original issue's description:
> Revert of Turn on job-based recompilation (patchset #2 id:20001 of https://codereview.chromium.org/832183004/)
>
> Reason for revert:
> revert
>
> Original issue's description:
> > Turn on job-based recompilation
> >
> > BUG=v8:3608
> > LOG=y
> > R=yangguo@chromium.org
> >
> > Committed: https://crrev.com/715552409b4a08504301cf1ad4cb2e45a815f01b
> > Cr-Commit-Position: refs/heads/master@{#25972}
>
> TBR=yangguo@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:3608
>
> Committed: https://crrev.com/28a5a4865183769cbed9d42ad3fdc1b1d8bae3a3
> Cr-Commit-Position: refs/heads/master@{#25975}

TBR=yangguo@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=v8:3608
Committed: https://crrev.com/b4bc9c1a3a7d03dee0b3dd6460414085f79cd36e
Cr-Commit-Position: refs/heads/master@{#25994}

[jochen (gone - plz use gerrit), 2015-01-08 13:15:41]

Created Revert of Revert of Turn on job-based recompilation

[commit-bot: I haz the power, 2015-01-08 13:15:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/840023002/1

[commit-bot: I haz the power, 2015-01-08 13:16:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-08 13:16:12]

Patchset 1 (id:??) landed as
https://crrev.com/b4bc9c1a3a7d03dee0b3dd6460414085f79cd36e
Cr-Commit-Position: refs/heads/master@{#25994}

[Yang, 2015-01-08 13:16:13]

On 2015/01/08 13:16:01, I haz the power (commit-bot) wrote:
> Committed patchset #1 (id:1)

lgtm.

[jochen (gone - plz use gerrit), 2015-01-08 14:30:08]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/832103003/ by jochen@chromium.org.

The reason for reverting is: still doesn't work.