The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/55f0eaf2e3f710faafcae8cf32546729adce93b6

commit 55f0eaf2e3f710faafcae8cf32546729adce93b6
Author: kylechar <kylechar@chromium.org>
Date: Wed Jan 11 22:57:37 2017

Move TouchTransformerController to ui/display/.

We need to add touchscreen support to mustash where display and
input-device management happens in a different process from ash.
Decouple ash::TouchTransformerController from the rest of ash and move
to src/ui/display/ so it can be used with mus. This also decouples and
moves the accompanying tests.

The dependency on WindowTreeHostManager can't be broken so add
AshTouchTransformController which extends TouchTransformController and
listens for ash display configuration changes.

BUG= 679747 

Review-Url: https://codereview.chromium.org/2617043003
Cr-Commit-Position: refs/heads/master@{#443037}

[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ash/BUILD.gn
[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ash/shell.cc
[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ash/shell.h
[add] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ash/touch/ash_touch_transform_controller.cc
[add] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ash/touch/ash_touch_transform_controller.h
[delete] https://crrev.com/33b63eb41f344fd42b6e1c62e06459c3543f4102/ash/touch/touch_transformer_controller.h
[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/chrome/browser/chromeos/display/touch_calibrator/touch_calibrator_controller.cc
[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/BUILD.gn
[modify] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/manager/BUILD.gn
[add] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/manager/chromeos/DEPS
[rename] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/manager/chromeos/touch_transform_controller.cc
[add] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/manager/chromeos/touch_transform_controller.h
[rename] https://crrev.com/55f0eaf2e3f710faafcae8cf32546729adce93b6/ui/display/manager/chromeos/touch_transform_controller_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f77fda1001064005346121f403bb80b3414cbc00

commit f77fda1001064005346121f403bb80b3414cbc00
Author: kylechar <kylechar@chromium.org>
Date: Thu Jan 12 05:28:22 2017

Add full touch support to mus.

Everything necessary to use the existing display to touch input-device
association/transform code is accessible from mus now.
ScreenManagerOzone creates a TouchTransformController and tells it to
compute new transforms when the display configuration changes. That's
it.

Delete existing touch code that was added to the WS to associate a
single display and touch input-device.

BUG= 679747 

Review-Url: https://codereview.chromium.org/2627623003
Cr-Commit-Position: refs/heads/master@{#443162}

[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/display/screen_manager_ozone.cc
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/display/screen_manager_ozone.h
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/service.cc
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/service.h
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/ws/BUILD.gn
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/ws/display_manager.cc
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/ws/test_utils.h
[delete] https://crrev.com/fd39adcc3b11e8ebe81754de74fc3cd191e44c29/services/ui/ws/touch_controller.cc
[delete] https://crrev.com/fd39adcc3b11e8ebe81754de74fc3cd191e44c29/services/ui/ws/touch_controller.h
[modify] https://crrev.com/f77fda1001064005346121f403bb80b3414cbc00/services/ui/ws/window_server_delegate.h

We're now using the same touchscreen code in mustash that classic ash uses, so touchscreen device input should work the same.