onMoveShouldSetResponderCapture() {
          eventLog.push('grandParent: onMoveShouldSetResponderCapture');
          return false;
        }
If nothing is responder, then the negotiation should propagate directly to
the deepest target in the second touch. Once there are no more pointers
that started within the responder, it should be released (even if there are
active pointers elsewhere on the screen)