The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9f5999a56e0def4513ca2818a1215fc17c926e8c

commit 9f5999a56e0def4513ca2818a1215fc17c926e8c
Author: sky <sky@chromium.org>
Date: Fri Aug 05 17:41:32 2016

Adds WmShell::IsTouchDown()

Will be used by frame border hit test code.

BUG= 634967 
TEST=none
R=msw@chromium.org

Review-Url: https://codereview.chromium.org/2218143002
Cr-Commit-Position: refs/heads/master@{#410098}

[modify] https://crrev.com/9f5999a56e0def4513ca2818a1215fc17c926e8c/ash/aura/wm_shell_aura.cc
[modify] https://crrev.com/9f5999a56e0def4513ca2818a1215fc17c926e8c/ash/aura/wm_shell_aura.h
[modify] https://crrev.com/9f5999a56e0def4513ca2818a1215fc17c926e8c/ash/common/wm_shell.h
[modify] https://crrev.com/9f5999a56e0def4513ca2818a1215fc17c926e8c/ash/mus/bridge/wm_shell_mus.cc
[modify] https://crrev.com/9f5999a56e0def4513ca2818a1215fc17c926e8c/ash/mus/bridge/wm_shell_mus.h

The specific state needed at this point is WmShell::IsTouchDown, but before adding that one we should make sure there isn't other random state needed.

This function is only queried in response to events in the wm, so it should be possible to track this without needing all events. I think the best way to fix this is to make WmShellMus same implementation as WmShellAura (query aura::Env) and change the wm to update Env when it gets events.

This is no longer applicable.