Add @UnsupportedAppUsage annotations

For packages:
  android.net.wimax
  android.net.wifi.p2p.nsd
  android.net.wifi.p2p
  android.net.wifi.hotspot2.pps
  android.net.wifi.hotspot2.omadm
  android.net.wifi.hotspot2
  android.net.wifi.aware
  android.net.wifi
  android.net.util
  android.net.sip
  android.net.rtp
  android.net.nsd
  android.net.metrics
  android.net.lowpan
  android.net.http
  android.net.captiveportal
  android.net

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: Ie25423113ee1a8071cd5039382c00de6ce0af7fd
Merged-In: I520be7a4c79e68310c12e4f55bf66acaa94145a1
diff --git a/core/java/android/net/metrics/IpManagerEvent.java b/core/java/android/net/metrics/IpManagerEvent.java
index f8a63ce..c47650f 100644
--- a/core/java/android/net/metrics/IpManagerEvent.java
+++ b/core/java/android/net/metrics/IpManagerEvent.java
@@ -17,6 +17,7 @@
 package android.net.metrics;
 
 import android.annotation.IntDef;
+import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.SparseArray;
@@ -53,6 +54,7 @@
     public final @EventType int eventType;
     public final long durationMs;
 
+    @UnsupportedAppUsage
     public IpManagerEvent(@EventType int eventType, long duration) {
         this.eventType = eventType;
         this.durationMs = duration;