[M60] exo: Fix multi-display hardware cursor

[M60] exo: Fix multi-display hardware cursor

This CL fixes crashes in extended desktop mode caused by incorrect
parenting of the cursor surface, as well as cases where the cursor
was captured with an incorrect transform or hotspot:

  1) The mouse enters a display with a different DSF or UI scale.
  2) The internal display is not the primary display.
  3) The display is rotated.

It also adds a TODO for an accessibility regression.

TBR=reveman@chromium.org
NOTRY=true
NOPRESUBMIT=true
BUG=631136
BUG=642894
TEST=caroline: Cursor parenting and scaling is correct for each display.
TEST=caroline: Cursor on rotated displays has correct orientation.

Review-Url: https://codereview.chromium.org/2780623002
Cr-Original-Commit-Position: refs/heads/master@{#476353}
Review-Url: https://codereview.chromium.org/2924873008
Cr-Commit-Position: refs/branch-heads/3112@{#263}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed: https://chromium.googlesource.com/chromium/src/+/e0a90e7641fe7a24179747861292ef199dae85e5

[Dominik Laskowski, 2017-06-08 20:37:07]

The CQ bit was checked by domlaskowski@chromium.org

[commit-bot: I haz the power, 2017-06-08 20:37:50]

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, 2017-06-08 20:38:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1496954227008250, "parent_rev":
"6b2635e877a3b3f3c9c4a4e59ca59f1cf155db89", "commit_rev":
"e0a90e7641fe7a24179747861292ef199dae85e5"}

[commit-bot: I haz the power, 2017-06-08 20:38:35]

Description was changed from

==========
[M60] exo: Fix multi-display hardware cursor

This CL fixes crashes in extended desktop mode caused by incorrect
parenting of the cursor surface, as well as cases where the cursor
was captured with an incorrect transform or hotspot:

  1) The mouse enters a display with a different DSF or UI scale.
  2) The internal display is not the primary display.
  3) The display is rotated.

It also adds a TODO for an accessibility regression.

TBR=reveman@chromium.org
NOTRY=true
NOPRESUBMIT=true
BUG=631136
BUG=642894
TEST=caroline: Cursor parenting and scaling is correct for each display.
TEST=caroline: Cursor on rotated displays has correct orientation.

Review-Url: https://codereview.chromium.org/2780623002
Cr-Commit-Position: refs/heads/master@{#476353}
(cherry picked from commit ba20af04ad131e2fc7b8fd4142cffd7461057d5b)
==========

to

==========
[M60] exo: Fix multi-display hardware cursor

This CL fixes crashes in extended desktop mode caused by incorrect
parenting of the cursor surface, as well as cases where the cursor
was captured with an incorrect transform or hotspot:

  1) The mouse enters a display with a different DSF or UI scale.
  2) The internal display is not the primary display.
  3) The display is rotated.

It also adds a TODO for an accessibility regression.

TBR=reveman@chromium.org
NOTRY=true
NOPRESUBMIT=true
BUG=631136
BUG=642894
TEST=caroline: Cursor parenting and scaling is correct for each display.
TEST=caroline: Cursor on rotated displays has correct orientation.

Review-Url: https://codereview.chromium.org/2780623002
Cr-Original-Commit-Position: refs/heads/master@{#476353}
Review-Url: https://codereview.chromium.org/2924873008
Cr-Commit-Position: refs/branch-heads/3112@{#263}
Cr-Branched-From:
b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed:
https://chromium.googlesource.com/chromium/src/+/e0a90e7641fe7a24179747861292...
==========

[commit-bot: I haz the power, 2017-06-08 20:38:36]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e0a90e7641fe7a24179747861292...