ength; i++) {
      if (values[i] >= aVal) {
        if (i > 0 && aVal - values[i - 1] < values[i] - aVal) {
          i--;
        }
        return values[i];
      }
    }
    return values[i - 1];
  },
};

XPCOMUtils.defineLazyPreferenceGetter(
  ZoomManager,
  "MIN",
  "zoom.minPercent",
  30,
  null,
  v => v / 100
);
XPCOMUtils.defineLazyPreferenceGetter(
  ZoomManager,
  "MAX",
  "zoom.maxPercent",
  500,
  null,
  v => v / 100
);

XPCOMUtils.defineLazyPreferenceGetter(
  ZoomManager,
  "zoomValues",
  "toolkit.zoomManager.zoomValues",
  ".3,.5,.67,.8,.9,1,1.1,1.2,1.33,1.5,1.7,2,2.4,3,4,5",
  null,
  zoomValues => {
    zoomValues = zoomValues.split(",").map(parseFloat);
    zoomValues.sort((a, b) => a - b);

    while (zoomValues[0] < this.MIN) {
      zoomValues.shift();
    }

    while (zoomValues[zoomValues.length - 1] > this.MAX) {
      zoomValues.pop();
    }

    return zoomValues;
  }
);

XPCOMUtils.defineLazyPreferenceGetter(
  ZoomManager,
  "useFullZoom",
  "browser.zoom.full"
);
PK