Reset gesture detection upon page navigation for Aura

      In order to stop the gesture events to be generated and sent while navigating
to a different page on the main frame or the window loses focus, we decide
to cancel all the active touch events on the current Aura window before
the touch release event.

BUG=418402

Review URL: https://codereview.chromium.org/868123002

Cr-Commit-Position: refs/heads/master@{#315705}