Use testdriver Action API to simulate touch actions in
third_party/blink/web_tests/external/wpt/touch-events/
multi-touch-interactions.html.

Bug: 1145677
Change-Id: Ia14e16d7f380d1c2cabc0e3ce8a1138a5255d8cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2702918


Commit-Queue: Lan Wei <lanwei@chromium.org>
Reviewed-by: Mustaq Ahmed <mustaq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#857806}

Co-authored-by: Lan Wei <lanwei@chromium.org>