Two fixes for mash browser_tests on chromes

Two fixes for mash browser_tests on chromes

If sysui crashes and restarts we can hit
RootWindowController::OnShelfWindowAvailable() more than once. The
code OnShelfWindowAvailable() calls to doesn't expect this and we
crash. I'm changing this code to do nothing in this case, which isn't
really right, but sysui is going away so this is all temporary.

The other change is to disable various services from being created in
chrome when in mash. These don't make sense for this config, so
disabling.

BUG=594600
TEST=covered by tests
R=ben@chromium.org

Committed: https://crrev.com/eb82553244fd22a01078f330ea8cefaa160e1901
Cr-Commit-Position: refs/heads/master@{#403512}

[Ben Goodger (Google), 2016-07-01 19:45:51]

lgtm

[sky, 2016-07-01 19:46:38]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2016-07-01 19:47:11]

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, 2016-07-01 20:22:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-01 20:24:33]

Description was changed from

==========
Two fixes for mash browser_tests on chromes

If sysui crashes and restarts we can hit
RootWindowController::OnShelfWindowAvailable() more than once. The
code OnShelfWindowAvailable() calls to doesn't expect this and we
crash. I'm changing this code to do nothing in this case, which isn't
really right, but sysui is going away so this is all temporary.

The other change is to disable various services from being created in
chrome when in mash. These don't make sense for this config, so
disabling.

BUG=594600
TEST=covered by tests
R=ben@chromium.org
==========

to

==========
Two fixes for mash browser_tests on chromes

If sysui crashes and restarts we can hit
RootWindowController::OnShelfWindowAvailable() more than once. The
code OnShelfWindowAvailable() calls to doesn't expect this and we
crash. I'm changing this code to do nothing in this case, which isn't
really right, but sysui is going away so this is all temporary.

The other change is to disable various services from being created in
chrome when in mash. These don't make sense for this config, so
disabling.

BUG=594600
TEST=covered by tests
R=ben@chromium.org

Committed: https://crrev.com/eb82553244fd22a01078f330ea8cefaa160e1901
Cr-Commit-Position: refs/heads/master@{#403512}
==========

[commit-bot: I haz the power, 2016-07-01 20:24:34]

Patchset 1 (id:??) landed as
https://crrev.com/eb82553244fd22a01078f330ea8cefaa160e1901
Cr-Commit-Position: refs/heads/master@{#403512}