Adds ui/README.md

Adds ui/README.md

With a description of what should go in this directory. Also removes
README.chromium as we seem to prefer the md files.

R=ben@chromium.org
BUG=none
TEST=none

Review-Url: https://codereview.chromium.org/2894143003
Cr-Commit-Position: refs/heads/master@{#473347}
Committed: https://chromium.googlesource.com/chromium/src/+/b612a168f2e4f6a374398ecbb7d8a456062c2ff6

[sky, 2017-05-19 17:58:52]

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

[commit-bot: I haz the power, 2017-05-19 17:59:35]

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, 2017-05-19 18:13:24]

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

[commit-bot: I haz the power, 2017-05-19 18:13:25]

Dry run: This issue passed the CQ dry run.

[Ben Goodger (Google), 2017-05-19 20:56:48]

lgtm

[sky, 2017-05-19 21:53:06]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2017-05-19 21:53:56]

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, 2017-05-19 21:59:23]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495230786447360, "parent_rev":
"aac9fbb89108a6c02e3b491bab4de977fec77e69", "commit_rev":
"b612a168f2e4f6a374398ecbb7d8a456062c2ff6"}

[commit-bot: I haz the power, 2017-05-19 21:59:34]

Description was changed from

==========
Adds ui/README.md

With a description of what should go in this directory. Also removes
README.chromium as we seem to prefer the md files.

R=ben@chromium.org
BUG=none
TEST=none
==========

to

==========
Adds ui/README.md

With a description of what should go in this directory. Also removes
README.chromium as we seem to prefer the md files.

R=ben@chromium.org
BUG=none
TEST=none

Review-Url: https://codereview.chromium.org/2894143003
Cr-Commit-Position: refs/heads/master@{#473347}
Committed:
https://chromium.googlesource.com/chromium/src/+/b612a168f2e4f6a374398ecbb7d8...
==========

[commit-bot: I haz the power, 2017-05-19 21:59:34]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b612a168f2e4f6a374398ecbb7d8...