[Android] Add buildbot annotation for junit tests.

[Android] Add buildbot annotation for junit tests.

Another fix for https://codereview.chromium.org/1127153004/. Hooray for
non-recipe bots.

BUG=
TBR=perezju@chromium.org

Committed: https://crrev.com/08e45a91d9da4baa6e3381142607312cb33c0139
Cr-Commit-Position: refs/heads/master@{#329238}

[jbudorick, 2015-05-11 20:05:52]

jbudorick@chromium.org changed reviewers:
+ perezju@chromium.org

[jbudorick, 2015-05-11 20:06:51]

On 2015/05/11 20:05:52, jbudorick wrote:

TBR to fix base_junit_tests being grouped with provision_devices, e.g.
http://build.chromium.org/p/chromium.fyi/builders/Android%20Tests%20%28K%20N5...

[jbudorick, 2015-05-11 20:06:59]

The CQ bit was checked by jbudorick@chromium.org

[commit-bot: I haz the power, 2015-05-11 20:07:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1131143003/1

[commit-bot: I haz the power, 2015-05-11 20:14:11]

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

[commit-bot: I haz the power, 2015-05-11 20:14:13]

Try jobs failed on following builders:
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[jbudorick, 2015-05-11 20:40:14]

The CQ bit was checked by jbudorick@chromium.org

[commit-bot: I haz the power, 2015-05-11 20:40:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1131143003/1

[commit-bot: I haz the power, 2015-05-11 21:27:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-11 21:29:13]

Patchset 1 (id:??) landed as
https://crrev.com/08e45a91d9da4baa6e3381142607312cb33c0139
Cr-Commit-Position: refs/heads/master@{#329238}