GitLab

In order to allow more than one touch filter to delay the reporting of
touches, make the existing filter keep track of its own filter state.

BUG=b:69232663
TEST=manual testing with filters enabled

Change-Id: Idfc68fea22574becd920cdd599dd2e90e19bd04d
Reviewed-on: https://chromium-review.googlesource.com/1093584Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567844}