Merge "Do not throw on call to isTetheringSupported w/o permission" into oc-mr1-dev

     * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or

     * due to device configuration.

     *

     * <p>If this app does not have permission to use this API, it will always

     * return false rather than throw an exception.</p>

     *

     * <p>If the device has a hotspot provisioning app, the caller is required to hold the

     * {@link android.Manifest.permission.TETHER_PRIVILEGED} permission.</p>

     *

     * <p>Otherwise, this method requires the caller to hold the ability to modify system

     * settings as determined by {@link android.provider.Settings.System#canWrite}.</p>

     *

     * @return a boolean - {@code true} indicating Tethering is supported.

     *

     * {@hide}

     */

    @SystemApi

    @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED)

    @RequiresPermission(anyOf = {android.Manifest.permission.TETHER_PRIVILEGED,

            android.Manifest.permission.WRITE_SETTINGS})

    public boolean isTetheringSupported() {

        try {

        String pkgName = mContext.getOpPackageName();

        try {

            return mService.isTetheringSupported(pkgName);

        } catch (SecurityException e) {

            // This API is not available to this caller, but for backward-compatibility

            // this will just return false instead of throwing.

            return false;

        } catch (RemoteException e) {

            throw e.rethrowFromSystemServer();

        }