Merge "Don't match network requests to legacy API requests."

     * Guess what the network request was trying to say so that the resulting

     * network is accessible via the legacy (deprecated) API such as

     * requestRouteToHost.

     * This means we should try to be fairly preceise about transport and

     *

     * This means we should try to be fairly precise about transport and

     * capability but ignore things such as networkSpecifier.

     * If the request has more than one transport or capability it doesn't

     * match the old legacy requests (they selected only single transport/capability)

     * so this function cannot map the request to a single legacy type and

     * the resulting network will not be available to the legacy APIs.

     *

     * This code is only called from the requestNetwork API (L and above).

     *

     * Setting a legacy type causes CONNECTIVITY_ACTION broadcasts, which are expensive

     * because they wake up lots of apps - see http://b/23350688 . So we currently only

     * do this for SUPL requests, which are the only ones that we know need it. If

     * omitting these broadcasts causes unacceptable app breakage, then for backwards

     * compatibility we can send them:

     *

     * if (targetSdkVersion < Build.VERSION_CODES.M) &&        // legacy API unsupported >= M

     *     targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP))  // requestNetwork not present < L

     *

     * TODO - This should be removed when the legacy APIs are removed.

     */

    private int inferLegacyTypeForNetworkCapabilities(NetworkCapabilities netCap) {

            return TYPE_NONE;

        }

        // Do this only for SUPL, until GpsLocationProvider is fixed. http://b/25876485 .

        if (!netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) {

            // NOTE: if this causes app breakage, we should not just comment out this early return;

            // instead, we should make this early return conditional on the requesting app's target

            // SDK version, as described in the comment above.

            return TYPE_NONE;

        }

        String type = null;

        int result = TYPE_NONE;