Add HTTP error annotation.

Add HTTP error annotation.

This allows the status to be retrieved programmatically.

R=maruel@google.com
BUG=

Review-Url: https://codereview.chromium.org/2984913002
Committed: https://github.com/luci/luci-go/commit/a443973d083ad00ce12186a32cb8ac379591d6da

[M-A Ruel, 2017-07-27 21:02:13]

maruel@chromium.org changed reviewers:
+ maruel@chromium.org

[M-A Ruel, 2017-07-27 21:02:14]

lgtm

[lexer, 2017-07-27 21:18:46]

The CQ bit was checked by lexer@google.com

[commit-bot: I haz the power, 2017-07-27 21:18:49]

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, 2017-07-27 21:52:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1501190326302140, "parent_rev":
"e295526f5ff8e4023422d895477f27974e27642f", "commit_rev":
"a443973d083ad00ce12186a32cb8ac379591d6da"}

[commit-bot: I haz the power, 2017-07-27 21:52:24]

Description was changed from

==========
Add HTTP error annotation.

This allows the status to be retrieved programmatically.

R=maruel@google.com
BUG=
==========

to

==========
Add HTTP error annotation.

This allows the status to be retrieved programmatically.

R=maruel@google.com
BUG=

Review-Url: https://codereview.chromium.org/2984913002
Committed:
https://github.com/luci/luci-go/commit/a443973d083ad00ce12186a32cb8ac379591d6da
==========

[commit-bot: I haz the power, 2017-07-27 21:52:25]

Committed patchset #1 (id:1) as
https://github.com/luci/luci-go/commit/a443973d083ad00ce12186a32cb8ac379591d6da