getStatusText() {
    if (this.profileError_) {
      return this.profileError_;
    } else if (this.lastRefreshToken_) {
      return 'Loading...';
    } else {
      let profiles = 0;
      let nonTileProfiles = 0;
      let tileProfiles = 0;
      goog.object.forEach(this.profileIds_, function(refCount) {
        profiles++;
        if (refCount === Infinity) {
          nonTileProfiles++;
        } else {
          tileProfiles++;
        }
      }, this);
      return 'Viewing ' + profiles + ' profiles, ' + nonTileProfiles +
          ' from API calls and ' + tileProfiles + ' from map tiles.';
    }
  }
Returns a description of the state of the available profile data.
@return {string}