Make it so chrome manifests are built if aura is set

Make it so chrome manifests are built if aura is set

This way a clean built of mash:all and chrome results in opening
chrome.

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

Committed: https://crrev.com/0333e3ae79491f4118869b6f988d25f147609812
Cr-Commit-Position: refs/heads/master@{#397837}

[Ben Goodger (Google), 2016-06-03 22:03:58]

lgtm

[sky, 2016-06-03 22:19:50]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2016-06-03 22:20:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2034263002/1

[commit-bot: I haz the power, 2016-06-03 23:25:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-03 23:27:18]

Description was changed from

==========
Make it so chrome manifests are built if aura is set

This way a clean built of mash:all and chrome results in opening
chrome.

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

to

==========
Make it so chrome manifests are built if aura is set

This way a clean built of mash:all and chrome results in opening
chrome.

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

Committed: https://crrev.com/0333e3ae79491f4118869b6f988d25f147609812
Cr-Commit-Position: refs/heads/master@{#397837}
==========

[commit-bot: I haz the power, 2016-06-03 23:27:19]

Patchset 1 (id:??) landed as
https://crrev.com/0333e3ae79491f4118869b6f988d25f147609812
Cr-Commit-Position: refs/heads/master@{#397837}