Add json config for field group that fetches warmup URL

Add json config for field group that fetches warmup URL

BUG=672334
Review-Url: https://codereview.chromium.org/2707553003
Cr-Commit-Position: refs/heads/master@{#452196}
Committed: https://chromium.googlesource.com/chromium/src/+/aedc88255e58fb8c4db948c47efa11ddea24b43c

[tbansal1, 2017-02-17 23:49:36]

Description was changed from

==========
Add json config for DRP warmup

BUG=
==========

to

==========
Add json config for field group that fetches warmup URL

BUG=672334
==========

[tbansal1, 2017-02-17 23:50:12]

tbansal@chromium.org changed reviewers:
+ asvitkine@chromium.org

[tbansal1, 2017-02-17 23:50:12]

asvitkine: ptal. Thanks.

[Alexei Svitkine (slow), 2017-02-22 19:42:35]

lgtm

[tbansal1, 2017-02-22 19:43:53]

The CQ bit was checked by tbansal@chromium.org

[commit-bot: I haz the power, 2017-02-22 19:45:16]

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, 2017-02-22 21:04:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487792633583220, "parent_rev":
"fcd661e0dad674557e2ffdc68d6fcfb4ab21080f", "commit_rev":
"aedc88255e58fb8c4db948c47efa11ddea24b43c"}

[commit-bot: I haz the power, 2017-02-22 21:04:41]

Description was changed from

==========
Add json config for field group that fetches warmup URL

BUG=672334
==========

to

==========
Add json config for field group that fetches warmup URL

BUG=672334

Review-Url: https://codereview.chromium.org/2707553003
Cr-Commit-Position: refs/heads/master@{#452196}
Committed:
https://chromium.googlesource.com/chromium/src/+/aedc88255e58fb8c4db948c47efa...
==========

[commit-bot: I haz the power, 2017-02-22 21:04:41]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/aedc88255e58fb8c4db948c47efa...