The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5020baea3c8279cca2d17bea4ab10364fc937222

commit 5020baea3c8279cca2d17bea4ab10364fc937222
Author: David Reveman <reveman@chromium.org>
Date: Sun Apr 08 14:05:03 2018

exo: Prevent client from changing widget bounds incorrectly.

This adds two more cases to UpdateWidgetBounds() where we return
early as the shell is managing the bounds of the widget:

1. When window is snapped.
2. When widget bounds are being animated.

Bug:  830016 
Test: exo_unittests --gtest_filter=ShellSurfaceTest.CycleSnap
Test: Alt-[ works correctly for XDG shell clients.
Change-Id: I91ae8b7720ee8b525b1bafd98df9f524017fe4f9
Reviewed-on: https://chromium-review.googlesource.com/1001312
Commit-Queue: David Reveman <reveman@chromium.org>
Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549087}
[modify] https://crrev.com/5020baea3c8279cca2d17bea4ab10364fc937222/components/exo/shell_surface_base.cc
[modify] https://crrev.com/5020baea3c8279cca2d17bea4ab10364fc937222/components/exo/shell_surface_unittest.cc