onMove_(event) {
    if (this.ws_.isDisabled()) {
      return;
    }

    const info = Touch.normalizeEventInfo(event);

    if (this.isGesture) {
      this.endTouches = Touch.getTouchCoordinates(event);
    } else {
      this.endX_ = info.x;
      this.endY_ = info.y;
    }
  }
Move touch handler. Saves end points.
@param {Event} event The Touch event.
@private