mash: Fix crashes during chrome teardown.

mash: Fix crashes during chrome teardown.

On ChromeOS, when running as a mus client, the browser does not initialize
AccessibilityManager and MagnificationManager. So avoid trying to shutdown
these systems during tear-down.

Also, MojoShellConnection is initialized before the various impls of
BrowserMainParts::PreMainMessageLoopRun(). There, defer the destruction
of MojoShellConnection until BrowserMainParts::PostMainMessageLoopRun()
impls are run.

BUG=601983
Committed: https://crrev.com/dd641a00bc5eb5401cfab3f3ae6a92439241424f
Cr-Commit-Position: refs/heads/master@{#387171}

[sadrul, 2016-04-12 22:49:29]

sadrul@chromium.org changed reviewers:
+ rockot@chromium.org, sky@chromium.org

[sadrul, 2016-04-12 22:49:30]

rockot@ Can you please check to see if the change in teardown order can affect
other things?

sky@ for the chrome/ change.

[sky, 2016-04-12 23:22:42]

LGTM

[Ken Rockot(use gerrit already), 2016-04-13 21:32:37]

lgtm

[sadrul, 2016-04-13 21:37:51]

sadrul@chromium.org changed reviewers:
+ ben@chromium.org

[sadrul, 2016-04-13 21:37:52]

+ben@ for owner stamp for the change in content/

[Ben Goodger (Google), 2016-04-13 21:41:01]

lgtm

[sadrul, 2016-04-13 23:37:26]

The CQ bit was checked by sadrul@chromium.org

[commit-bot: I haz the power, 2016-04-13 23:37:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1877153003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1877153003/1

[commit-bot: I haz the power, 2016-04-14 00:33:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-14 00:34:47]

Description was changed from

==========
mash: Fix crashes during chrome teardown.

On ChromeOS, when running as a mus client, the browser does not initialize
AccessibilityManager and MagnificationManager. So avoid trying to shutdown
these systems during tear-down.

Also, MojoShellConnection is initialized before the various impls of
BrowserMainParts::PreMainMessageLoopRun(). There, defer the destruction
of MojoShellConnection until BrowserMainParts::PostMainMessageLoopRun()
impls are run.

BUG=601983
==========

to

==========
mash: Fix crashes during chrome teardown.

On ChromeOS, when running as a mus client, the browser does not initialize
AccessibilityManager and MagnificationManager. So avoid trying to shutdown
these systems during tear-down.

Also, MojoShellConnection is initialized before the various impls of
BrowserMainParts::PreMainMessageLoopRun(). There, defer the destruction
of MojoShellConnection until BrowserMainParts::PostMainMessageLoopRun()
impls are run.

BUG=601983

Committed: https://crrev.com/dd641a00bc5eb5401cfab3f3ae6a92439241424f
Cr-Commit-Position: refs/heads/master@{#387171}
==========

[commit-bot: I haz the power, 2016-04-14 00:34:51]

Patchset 1 (id:??) landed as
https://crrev.com/dd641a00bc5eb5401cfab3f3ae6a92439241424f
Cr-Commit-Position: refs/heads/master@{#387171}