Reland "Disable the CompilerDispatcher if we don't have idle time"

Reland "Disable the CompilerDispatcher if we don't have idle time"

Original issue's description:
> Disable the CompilerDispatcher if we don't have idle time
>
> Since we can't do all steps on background threads, we need idle time to
> work
>
> BUG=v8:5215
> R=danno@chromium.org
>
> Review-Url: https://codereview.chromium.org/2600743002
> Cr-Commit-Position: refs/heads/master@{#41944}
> Committed: https://chromium.googlesource.com/v8/v8/+/a0d9eb346bba90aa0b32a
2d3184cbbfd6adb243e

BUG=v8:5215
Review-Url: https://codereview.chromium.org/2606233002
Cr-Commit-Position: refs/heads/master@{#42009}
Committed: https://chromium.googlesource.com/v8/v8/+/09cb6efd588521ef95c6fa7ba2c3e18331648ea0

[jochen (gone - plz use gerrit), 2017-01-02 12:23:23]

The CQ bit was checked by jochen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-02 12:23:38]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jochen (gone - plz use gerrit), 2017-01-02 12:47:25]

jochen@chromium.org changed reviewers:
+ marja@chromium.org

[jochen (gone - plz use gerrit), 2017-01-02 12:47:26]

ptal

the original version was reverted because v8_win_dbg timed out. I added this
trybot, and it passes...

the difference to the old CL is that in the unittest, I would also set
FLAG_ignition to true, but that's not really needed here, so I removed that.

[marja, 2017-01-02 12:48:58]

lgtm

[jochen (gone - plz use gerrit), 2017-01-02 12:53:22]

The CQ bit was unchecked by jochen@chromium.org

[jochen (gone - plz use gerrit), 2017-01-02 12:53:26]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2017-01-02 12:53:29]

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, 2017-01-02 12:59:11]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483361606019700, "parent_rev":
"b617335623909fd9179449443ee514c5b2be3c15", "commit_rev":
"09cb6efd588521ef95c6fa7ba2c3e18331648ea0"}

[commit-bot: I haz the power, 2017-01-02 12:59:16]

Description was changed from

==========
Reland "Disable the CompilerDispatcher if we don't have idle time"

Original issue's description:
> Disable the CompilerDispatcher if we don't have idle time
>
> Since we can't do all steps on background threads, we need idle time to
> work
>
> BUG=v8:5215
> R=danno@chromium.org
>
> Review-Url: https://codereview.chromium.org/2600743002
> Cr-Commit-Position: refs/heads/master@{#41944}
> Committed: https://chromium.googlesource.com/v8/v8/+/a0d9eb346bba90aa0b32a
2d3184cbbfd6adb243e

BUG=v8:5215
==========

to

==========
Reland "Disable the CompilerDispatcher if we don't have idle time"

Original issue's description:
> Disable the CompilerDispatcher if we don't have idle time
>
> Since we can't do all steps on background threads, we need idle time to
> work
>
> BUG=v8:5215
> R=danno@chromium.org
>
> Review-Url: https://codereview.chromium.org/2600743002
> Cr-Commit-Position: refs/heads/master@{#41944}
> Committed: https://chromium.googlesource.com/v8/v8/+/a0d9eb346bba90aa0b32a
2d3184cbbfd6adb243e

BUG=v8:5215

Review-Url: https://codereview.chromium.org/2606233002
Cr-Commit-Position: refs/heads/master@{#42009}
Committed:
https://chromium.googlesource.com/v8/v8/+/09cb6efd588521ef95c6fa7ba2c3e183316...
==========

[commit-bot: I haz the power, 2017-01-02 12:59:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/09cb6efd588521ef95c6fa7ba2c3e183316...