Reporting: Clarify "pending" reports, add README.md.

Reporting: Clarify "pending" reports, add README.md.

Add a few bits of documentation requested in a previous CL.

BUG=704259
Review-Url: https://codereview.chromium.org/2774403003
Cr-Commit-Position: refs/heads/master@{#460155}
Committed: https://chromium.googlesource.com/chromium/src/+/72a9ba62f86ddc14b76972333a3d5feee5f9b6d0

[Julia Tuttle, 2017-03-27 19:51:35]

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

[Julia Tuttle, 2017-03-27 19:51:49]

juliatuttle@chromium.org changed reviewers:
+ rdsmith@chromium.org

[Julia Tuttle, 2017-03-27 19:51:50]

PTAL, rdsmith.

[commit-bot: I haz the power, 2017-03-27 19:52:17]

Dry run: 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, 2017-03-27 21:03:44]

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

[commit-bot: I haz the power, 2017-03-27 21:03:44]

Dry run: This issue passed the CQ dry run.

[Randy Smith (Not in Mondays), 2017-03-28 15:20:03]

lgtm

[Julia Tuttle, 2017-03-28 17:23:19]

The CQ bit was checked by juliatuttle@chromium.org

[commit-bot: I haz the power, 2017-03-28 17:23:38]

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, 2017-03-28 17:28:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490721799954760, "parent_rev":
"5cc1a05a63f4db31cb3353de0909dd2a48b146f4", "commit_rev":
"72a9ba62f86ddc14b76972333a3d5feee5f9b6d0"}

[commit-bot: I haz the power, 2017-03-28 17:29:39]

Description was changed from

==========
Reporting: Clarify "pending" reports, add README.md.

Add a few bits of documentation requested in a previous CL.

BUG=704259
==========

to

==========
Reporting: Clarify "pending" reports, add README.md.

Add a few bits of documentation requested in a previous CL.

BUG=704259

Review-Url: https://codereview.chromium.org/2774403003
Cr-Commit-Position: refs/heads/master@{#460155}
Committed:
https://chromium.googlesource.com/chromium/src/+/72a9ba62f86ddc14b76972333a3d...
==========

[commit-bot: I haz the power, 2017-03-28 17:29:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/72a9ba62f86ddc14b76972333a3d...