[NAN] NAN System Api: RTT

am: ab9ef45971

Change-Id: I34039caac1a40a2c26d8a89d5a0d938fa5a4af62

wifi/java/android/net/wifi/nan/ConfigRequest.java

@@ -16,6 +16,7 @@
 
 package android.net.wifi.nan;
 
+import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 

wifi/java/android/net/wifi/nan/WifiNanManager.java

@@ -21,6 +21,7 @@ import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
+import android.annotation.SystemApi;
 import android.net.wifi.RttManager;
 import android.os.Binder;
 import android.os.Bundle;

wifi/java/android/net/wifi/nan/WifiNanSession.java

@@ -17,6 +17,7 @@
 package android.net.wifi.nan;
 
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
 import android.net.wifi.RttManager;
 import android.util.Log;
 
@@ -167,7 +168,7 @@ public class WifiNanSession {
      *                 {@link android.net.wifi.RttManager.RttParams#bssid} member must be set to
      *                 a peer ID - not to a MAC address.
      * @param listener The listener to receive the results of the ranging session.
-     * @hide (RTT API isn't public yet so can't unhide here)
+     * @hide PROPOSED_NAN_SYSTEM_API [TODO: b/28847998 - track RTT API & visilibity]
      */
     public void startRanging(RttManager.RttParams[] params, RttManager.RttListener listener) {
         if (mTerminated) {