mus ws: Consistently use mojom::Cursor instead of int32_t.

mus ws: Consistently use mojom::Cursor instead of int32_t.

Instead of casting back and forth between the two types at different
layers of the window server, consistently use mojom::Cursor and only
cast to int32_t at the final usage in DefaultPlatformDisplay.

BUG=614037
Committed: https://crrev.com/2fb80909a5e274f92122ba067bdf10cc4483417b
Cr-Commit-Position: refs/heads/master@{#421856}

[Elliot Glaysher, 2016-09-28 20:43:33]

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

[commit-bot: I haz the power, 2016-09-28 20:44:04]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Elliot Glaysher, 2016-09-28 21:33:14]

erg@chromium.org changed reviewers:
+ sky@chromium.org

[Elliot Glaysher, 2016-09-28 21:33:15]

Removes the back and forth casting of cursors at different layers.

[commit-bot: I haz the power, 2016-09-28 21:35:13]

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

[commit-bot: I haz the power, 2016-09-28 21:35:14]

Dry run: This issue passed the CQ dry run.

[sky, 2016-09-29 02:45:06]

Nice! Thanks for the cleanup. LGTM

[Elliot Glaysher, 2016-09-29 17:06:39]

The CQ bit was checked by erg@chromium.org

[commit-bot: I haz the power, 2016-09-29 17:07:36]

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, 2016-09-29 17:14:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-29 17:16:09]

Description was changed from

==========
mus ws: Consistently use mojom::Cursor instead of int32_t.

Instead of casting back and forth between the two types at different
layers of the window server, consistently use mojom::Cursor and only
cast to int32_t at the final usage in DefaultPlatformDisplay.

BUG=614037
==========

to

==========
mus ws: Consistently use mojom::Cursor instead of int32_t.

Instead of casting back and forth between the two types at different
layers of the window server, consistently use mojom::Cursor and only
cast to int32_t at the final usage in DefaultPlatformDisplay.

BUG=614037

Committed: https://crrev.com/2fb80909a5e274f92122ba067bdf10cc4483417b
Cr-Commit-Position: refs/heads/master@{#421856}
==========

[commit-bot: I haz the power, 2016-09-29 17:16:10]

Patchset 1 (id:??) landed as
https://crrev.com/2fb80909a5e274f92122ba067bdf10cc4483417b
Cr-Commit-Position: refs/heads/master@{#421856}