Merge "Added hasSha256SigningCertificate to the PackageManager aidl Interface." into sc-dev

     * This does nothing if this observer was not already registered.

     */

    void unregisterPackageChangeObserver(in IPackageChangeObserver observer);

    /**

     * Returns true if the package has the SHA 256 version of the signing certificate.

     * @see PackageManager#hasSigningCertificate(String, byte[], int), where type

     * has been set to {@link PackageManager#CERT_INPUT_SHA256}.

     */

    boolean hasSha256SigningCertificate(in @utf8InCpp String packageName, in byte[] certificate);

}