for Unified Telemetry.
   */
  setTelemetryRecordingFlags() {
    // Enable extended Telemetry on pre-release channels and disable it
    // on Release/ESR.
    let prereleaseChannels = [
      "nightly",
      "nightly-autoland",
      "nightly-try",
      "aurora",
      "beta",
    ];
    if (!AppConstants.MOZILLA_OFFICIAL) {
      // Turn extended telemetry for local developer builds.
      prereleaseChannels.push("default");
    }
    const isPrereleaseChannel = prereleaseChannels.includes(
      AppConstants.MOZ_UPDATE_CHANNEL
    );
    const isReleaseCandidateOnBeta =
      AppConstants.MOZ_UPDATE_CHANNEL === "release" &&
      Services.prefs.getCharPref("app.update.channel", null) === "beta";
    Services.telemetry.canRecordBase = true;
    Services.telemetry.canRecordExtended =
      isPrereleaseChannel ||
      isReleaseCandidateOnBeta ||
      Services.prefs.getBoolPref(this.Preferences.OverridePreRelease, false);
  },

  /**
   * Perform telemetry initialization for either chrome or content process.
   *
   * @return {boolean} True if Telemetry is allowed to record at least base (FHR) data,
   *                   false otherwise.
   */
  enableTelemetryRecording: function enableTelemetryRecording() {
    // Configure base Telemetry recording.
    // Unified Telemetry makes it opt-out. If extended Telemetry is enabled, base recording
    // is always on as well.
    if (this.IS_UNIFIED_TELEMETRY) {
      this.setTelemetryRecordingFlags();
    } else {
      // We're not on unified Telemetry, stick to the old behaviour for
      // supporting Fennec.
      Services.telemetry.canRecordBase = Services.telemetry.canRecordExtended =
        this.isTelemetryEnabled;
    }

    this.log.config(
      "enableTelemetryRecording - canRecordBase:" +
        Services.telemetry.canRecordBase +
        ", canRecordExtended: " +
        Services.telemetry.canRecordExtended
    );

    return Services.telemetry.canRecordBase;
  },
});
PK