GitLab

Modifiers specified as:
{ ctrl: true }
worked, but
{ ctrl: false }

got interpreted as having ctrl down (as the code only checked the presence of the value and not its boolean state).

Change-Id: Icec8959441c193d548fcaf45b163c41fdb351472
Reviewed-on: https://chromium-review.googlesource.com/985967
Commit-Queue: David Tseng <dtseng@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548106}