GitLab

caused by frame change

* Set the NONE targeting policy to the subtree of the
shell surface so that WindowEventDispatcher does not
generate syntheiszed events when window is moved during
frame change (in WindowEventDispatcher::OnWindowBoundsChanged)

This will be updated in next version of ARC++.

Bug: b/111319005
Test: covered by unittests. also tested manually on nami device.
Change-Id: I40b86983857ef3ca564d8e3504bf23b448f0626b
Reviewed-on: https://chromium-review.googlesource.com/1170389Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582066}