exo: Fix sub surface input event support.

exo: Fix sub surface input event support.

Return true from ShouldDescendIntoChildForEventHandling so
sub surface events are generated relative to the sub surface
rather than the top level shell surface.

BUG=549781
TEST=exo_unittests --gtest_filter=PointerTest.OnPointerMotion

Committed: https://crrev.com/f999944b9fe2e1e55f125095663d145b4008b8b1
Cr-Commit-Position: refs/heads/master@{#371913}

[reveman, 2016-01-27 21:57:59]

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

[reveman, 2016-01-27 21:58:55]

reveman@chromium.org changed reviewers:
+ lpique@chromium.org

[commit-bot: I haz the power, 2016-01-27 22:00:12]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1641773004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1641773004/1

[commit-bot: I haz the power, 2016-01-27 22:37:16]

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

[commit-bot: I haz the power, 2016-01-27 22:37:17]

Dry run: This issue passed the CQ dry run.

[lpique, 2016-01-27 22:55:19]

lgtm

[reveman, 2016-01-27 23:26:56]

The CQ bit was checked by reveman@chromium.org

[commit-bot: I haz the power, 2016-01-27 23:28:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1641773004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1641773004/1

[commit-bot: I haz the power, 2016-01-28 00:12:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-28 00:13:32]

Description was changed from

==========
exo: Fix sub surface input event support.

Return true from ShouldDescendIntoChildForEventHandling so
sub surface events are generated relative to the sub surface
rather than the top level shell surface.

BUG=549781
TEST=exo_unittests --gtest_filter=PointerTest.OnPointerMotion
==========

to

==========
exo: Fix sub surface input event support.

Return true from ShouldDescendIntoChildForEventHandling so
sub surface events are generated relative to the sub surface
rather than the top level shell surface.

BUG=549781
TEST=exo_unittests --gtest_filter=PointerTest.OnPointerMotion

Committed: https://crrev.com/f999944b9fe2e1e55f125095663d145b4008b8b1
Cr-Commit-Position: refs/heads/master@{#371913}
==========

[commit-bot: I haz the power, 2016-01-28 00:13:36]

Patchset 1 (id:??) landed as
https://crrev.com/f999944b9fe2e1e55f125095663d145b4008b8b1
Cr-Commit-Position: refs/heads/master@{#371913}