mus: Makes ~WindowTreeClient reset context factory

mus: Makes ~WindowTreeClient reset context factory

If WindowTreeClient sets the context_factory, then in it's destructor
it should reset the ContextFactory.

BUG=none
TEST=covered by tests
R=sadrul@chromium.org

Review-Url: https://codereview.chromium.org/2706403004
Cr-Commit-Position: refs/heads/master@{#452381}
Committed: https://chromium.googlesource.com/chromium/src/+/55c8300d35c4c6abbb480e709f571b66658e80e6

[sky, 2017-02-22 17:53:24]

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

[commit-bot: I haz the power, 2017-02-22 17:53:54]

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, 2017-02-22 19:58:08]

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

[commit-bot: I haz the power, 2017-02-22 19:58:08]

Dry run: This issue passed the CQ dry run.

[sadrul, 2017-02-23 03:45:07]

lgtm

[sky, 2017-02-23 03:48:03]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2017-02-23 03:48:46]

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, 2017-02-23 03:53:31]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487821683639760, "parent_rev":
"eb084fd1d58a705ffb148792be068eadedf12b6c", "commit_rev":
"55c8300d35c4c6abbb480e709f571b66658e80e6"}

[commit-bot: I haz the power, 2017-02-23 03:54:08]

Description was changed from

==========
mus: Makes ~WindowTreeClient reset context factory

If WindowTreeClient sets the context_factory, then in it's destructor
it should reset the ContextFactory.

BUG=none
TEST=covered by tests
R=sadrul@chromium.org
==========

to

==========
mus: Makes ~WindowTreeClient reset context factory

If WindowTreeClient sets the context_factory, then in it's destructor
it should reset the ContextFactory.

BUG=none
TEST=covered by tests
R=sadrul@chromium.org

Review-Url: https://codereview.chromium.org/2706403004
Cr-Commit-Position: refs/heads/master@{#452381}
Committed:
https://chromium.googlesource.com/chromium/src/+/55c8300d35c4c6abbb480e709f57...
==========

[commit-bot: I haz the power, 2017-02-23 03:54:09]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/55c8300d35c4c6abbb480e709f57...