Support Blink 'touch-action-delay' property
Support Blink 'touch-action-delay' property

- Will remove 300ms click delay
- Disables `touchevent.preventDefault()`, should enable compositing scrolling
- Result of discussions at BlinkON:
  https://docs.google.com/a/google.com/presentation/d/1J1jG0XF6k42PA4s-otHFXZxrou7aKwYKYF90xPOe9bQ/edit#slide=id.g1076b4fe2_085

roblarsen/pointer-events.js