[GN] Prefer explicit pool to automatic link_pool for link targets.

[GN] Prefer explicit pool to automatic link_pool for link targets.

In preparation of refactoring the concurrent_links code to use
explicit pools, prefer to use an explicit pool if defined over
the automatic link_pool for link targets.

BUG=612786
Committed: https://crrev.com/1c27131e1bf77b059ef4c4f444bdccecdddeb0f6
Cr-Commit-Position: refs/heads/master@{#408077}

[sdefresne, 2016-07-26 13:32:52]

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

[commit-bot: I haz the power, 2016-07-26 13:33:04]

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

[sdefresne, 2016-07-26 13:33:16]

sdefresne@chromium.org changed reviewers:
+ brettw@chromium.org

[sdefresne, 2016-07-26 13:33:17]

Please take a look.

[commit-bot: I haz the power, 2016-07-26 14:10:08]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-07-26 14:10:09]

Dry run: This issue passed the CQ dry run.

[brettw, 2016-07-26 18:15:54]

lgtm

[sdefresne, 2016-07-27 08:42:42]

The CQ bit was checked by sdefresne@chromium.org

[commit-bot: I haz the power, 2016-07-27 08:43:10]

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, 2016-07-27 08:46:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-27 08:47:19]

Description was changed from

==========
[GN] Prefer explicit pool to automatic link_pool for link targets.

In preparation of refactoring the concurrent_links code to use
explicit pools, prefer to use an explicit pool if defined over
the automatic link_pool for link targets.

BUG=612786
==========

to

==========
[GN] Prefer explicit pool to automatic link_pool for link targets.

In preparation of refactoring the concurrent_links code to use
explicit pools, prefer to use an explicit pool if defined over
the automatic link_pool for link targets.

BUG=612786

Committed: https://crrev.com/1c27131e1bf77b059ef4c4f444bdccecdddeb0f6
Cr-Commit-Position: refs/heads/master@{#408077}
==========

[commit-bot: I haz the power, 2016-07-27 08:47:20]

Patchset 1 (id:??) landed as
https://crrev.com/1c27131e1bf77b059ef4c4f444bdccecdddeb0f6
Cr-Commit-Position: refs/heads/master@{#408077}