Merge changes from topic "move-emergency-phone-update" am: 77b5c5a3

    /**

     * Callback invoked when the current emergency number list has changed on the registered

     * subscription.

     * Note, the registration subId comes from {@link TelephonyManager} object which registers

     * PhoneStateListener by {@link TelephonyManager#listen(PhoneStateListener, int)}.

     *

     * Note, the registered subscription is associated with {@link TelephonyManager} object

     * on which {@link TelephonyManager#listen(PhoneStateListener, int)} was called.

     * If this TelephonyManager object was created with

     * {@link TelephonyManager#createForSubscriptionId(int)}, then the callback applies to the

     * subId. Otherwise, this callback applies to

     * given subId. Otherwise, this callback applies to

     * {@link SubscriptionManager#getDefaultSubscriptionId()}.

     *

     * @param emergencyNumberList Map including the key as the active subscription ID

     *                           (Note: if there is no active subscription, the key is

     *                           {@link SubscriptionManager#getDefaultSubscriptionId})

     *                           and the value as the list of {@link EmergencyNumber};

     *                           null if this information is not available.

     * @param emergencyNumberList Map associating all active subscriptions on the device with the

     *                            list of emergency numbers originating from that subscription.

     *                            If there are no active subscriptions, the map will contain a

     *                            single entry with

     *                            {@link SubscriptionManager#INVALID_SUBSCRIPTION_ID} as

     *                            the key and a list of emergency numbers as the value. If no

     *                            emergency number information is available, the value will be null.

     */

    public void onEmergencyNumberListChanged(

            @NonNull Map<Integer, List<EmergencyNumber>> emergencyNumberList) {