message: Clarify direction rotation
diff: @@ -924,7 +924,11 @@ export class ServerView extends DirMixin(PolymerElement) {
  this.accessKeySortBy = sortBy;
  this.accessKeySortDirection = 0;
  }
  - this.accessKeySortDirection = (this.accessKeySortDirection + 2) % 3 - 1;
  + // Rotate direction across [-1, 0, +1].
  + this.accessKeySortDirection += 1
  + if (this.accessKeySortDirection > 1) {
  + this.accessKeySortDirection = -1;
  + }
  }
  _sortAccessKeys(accessKeySortBy, accessKeySortDirection) {
  