Merge "Document which APIs are callable on the parent instance" into nyc-dev

    /**

     * Called by the profile owner of a managed profile to obtain a {@link DevicePolicyManager}

     * whose calls act on the parent profile.

     * <p>

     * Note only some methods will work on the parent Manager.

     *

     * <p>The following methods are supported for the parent instance, all other methods will

     * throw a SecurityException when called on the parent instance:

     * <ul>

     * <li>{@link #getPasswordQuality}</li>

     * <li>{@link #setPasswordQuality}</li>

     * <li>{@link #getPasswordMinimumLength}</li>

     * <li>{@link #setPasswordMinimumLength}</li>

     * <li>{@link #getPasswordMinimumUpperCase}</li>

     * <li>{@link #setPasswordMinimumUpperCase}</li>

     * <li>{@link #getPasswordMinimumLowerCase}</li>

     * <li>{@link #setPasswordMinimumLowerCase}</li>

     * <li>{@link #getPasswordMinimumLetters}</li>

     * <li>{@link #setPasswordMinimumLetters}</li>

     * <li>{@link #getPasswordMinimumNumeric}</li>

     * <li>{@link #setPasswordMinimumNumeric}</li>

     * <li>{@link #getPasswordMinimumSymbols}</li>

     * <li>{@link #setPasswordMinimumSymbols}</li>

     * <li>{@link #getPasswordMinimumNonLetter}</li>

     * <li>{@link #setPasswordMinimumNonLetter}</li>

     * <li>{@link #getPasswordHistoryLength}</li>

     * <li>{@link #setPasswordHistoryLength}</li>

     * <li>{@link #getPasswordExpirationTimeout}</li>

     * <li>{@link #setPasswordExpirationTimeout}</li>

     * <li>{@link #getPasswordExpiration}</li>

     * <li>{@link #isActivePasswordSufficient}</li>

     * <li>{@link #getCurrentFailedPasswordAttempts}</li>

     * <li>{@link #getMaximumFailedPasswordsForWipe}</li>

     * <li>{@link #setMaximumFailedPasswordsForWipe}</li>

     * <li>{@link #getMaximumTimeToLock}</li>

     * <li>{@link #setMaximumTimeToLock}</li>

     * <li>{@link #lockNow}</li>

     * <li>{@link #getKeyguardDisabledFeatures}</li>

     * <li>{@link #setKeyguardDisabledFeatures}</li>

     * <li>{@link #getTrustAgentConfiguration}</li>

     * <li>{@link #setTrustAgentConfiguration}</li>

     * </ul>

     *

     * @return a new instance of {@link DevicePolicyManager} that acts on the parent profile.

     * @throws SecurityException if {@code admin} is not a profile owner.