The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/641ff4b041f1be42634ca883244fb5c3c7eb4ada

commit 641ff4b041f1be42634ca883244fb5c3c7eb4ada
Author: Elliot Glaysher <erg@chromium.org>
Date: Wed Aug 02 17:50:54 2017

[ash] Remove UnConfineCursor().

This code was literally unusued.

Bug:  746054 
Change-Id: I65b7a748818ee074b48745c0a4f9260e8fd6c852
Reviewed-on: https://chromium-review.googlesource.com/596916
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Elliot Glaysher <erg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491430}
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ash/host/ash_window_tree_host.h
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ash/host/ash_window_tree_host_platform.cc
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ash/host/ash_window_tree_host_platform.h
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ash/mus/ash_window_tree_host_mus.cc
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ash/mus/ash_window_tree_host_mus.h
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ui/aura/window_tree_host_mac.h
[modify] https://crrev.com/641ff4b041f1be42634ca883244fb5c3c7eb4ada/ui/aura/window_tree_host_mac.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5370af362d9e414c4a0e47c41743992934b56565

commit 5370af362d9e414c4a0e47c41743992934b56565
Author: Elliot Glaysher <erg@chromium.org>
Date: Fri Aug 04 17:28:25 2017

Implement AshWindowTreeHostMus::ConfineCursorToRootWindow().

This has the window manager notify the window server of changes to the
bounds the cursor can be in a window.

Bug:  746054 
Change-Id: I964bc8533ba308e259cc328853c2ea43c995c199
Reviewed-on: https://chromium-review.googlesource.com/599003
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Elliot Glaysher <erg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492060}
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ash/mus/ash_window_tree_host_mus.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/public/interfaces/window_manager.mojom
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/platform_display.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/platform_display_default.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/platform_display_default.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/test_utils.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/test_utils.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/window_tree.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/window_tree.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/services/ui/ws/window_tree_unittest.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/mus/window_tree_client.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/mus/window_tree_client.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/mus/window_tree_host_mus.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/mus/window_tree_host_mus.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/mus/window_tree_host_mus_delegate.h
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/test/mus/test_window_manager_client.cc
[modify] https://crrev.com/5370af362d9e414c4a0e47c41743992934b56565/ui/aura/test/mus/test_window_manager_client.h