Change Doc for getConnectionInfo

When app doesn't have location permission or location mode disabled,
FQDN and friendly name will not ba able to access.

Bug: 147699220
Test: build
Change-Id: If4000ba550ee58a17cbf77e4e28a9e6a592b6264

wifi/java/android/net/wifi/WifiInfo.java

@@ -631,6 +631,11 @@ public class WifiInfo implements Parcelable {
 
     /**
      * Returns the Fully Qualified Domain Name of the network if it is a Passpoint network.
+     * <p>
+     * The FQDN may be
+     * <lt>{@code null} if no network currently connected, currently connected network is not
+     * passpoint network or the caller has insufficient permissions to access the FQDN.</lt>
+     * </p>
      */
     public @Nullable String getPasspointFqdn() {
         return mFqdn;
@@ -643,6 +648,12 @@ public class WifiInfo implements Parcelable {
 
     /**
      * Returns the Provider Friendly Name of the network if it is a Passpoint network.
+     * <p>
+     * The Provider Friendly Name may be
+     * <lt>{@code null} if no network currently connected, currently connected network is not
+     * passpoint network or the caller has insufficient permissions to access the Provider Friendly
+     * Name. </lt>
+     * </p>
      */
     public @Nullable String getPasspointProviderFriendlyName() {
         return mProviderFriendlyName;

wifi/java/android/net/wifi/WifiManager.java

@@ -2602,6 +2602,8 @@ public class WifiManager {
      * the same permissions as {@link #getScanResults}. If such access is not allowed,
      * {@link WifiInfo#getSSID} will return {@link #UNKNOWN_SSID} and
      * {@link WifiInfo#getBSSID} will return {@code "02:00:00:00:00:00"}.
+     * {@link WifiInfo#getPasspointFqdn()} will return null.
+     * {@link WifiInfo#getPasspointProviderFriendlyName()} will return null.
      *
      * @return the Wi-Fi information, contained in {@link WifiInfo}.
      */