Start with event_target in for loop to avoid GetEventTargeter crash.
Came across this while working on the CL for dispatching event to root
window if target window has already been deleted (
https://codereview.chromium.org/2696873002). If the target window we
are starting from is already the root window in that WindowTreeHost,
starting with the parent target (in this case aura::Env) for that window
would cause crash when trying to access its event targeter. Change it to
start with the event_target itself.
BUG=687700, 664617
TEST=aura_unittests
Review-Url: https://codereview.chromium.org/2730903005
Cr-Commit-Position: refs/heads/master@{#454780}
2 files changed
