Make TetheringRequest parcelable

Make TetheringRequest parcelable so we can pass it via Wifi APIs and map
Soft AP state changes to the correct request.

Bug: 216524590
Test: build
Change-Id: I63a45b14e9abc288b353159dfdcbe96fde485cb7
diff --git a/Tethering/common/TetheringLib/api/system-current.txt b/Tethering/common/TetheringLib/api/system-current.txt
index 844ff64..a287b42 100644
--- a/Tethering/common/TetheringLib/api/system-current.txt
+++ b/Tethering/common/TetheringLib/api/system-current.txt
@@ -95,13 +95,16 @@
     method public default void onUpstreamChanged(@Nullable android.net.Network);
   }
 
-  public static class TetheringManager.TetheringRequest {
+  public static final class TetheringManager.TetheringRequest implements android.os.Parcelable {
+    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") public int describeContents();
     method @Nullable public android.net.LinkAddress getClientStaticIpv4Address();
     method public int getConnectivityScope();
     method @Nullable public android.net.LinkAddress getLocalIpv4Address();
     method public boolean getShouldShowEntitlementUi();
     method public int getTetheringType();
     method public boolean isExemptFromEntitlementCheck();
+    method @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @FlaggedApi("com.android.net.flags.tethering_request_with_soft_ap_config") @NonNull public static final android.os.Parcelable.Creator<android.net.TetheringManager.TetheringRequest> CREATOR;
   }
 
   public static class TetheringManager.TetheringRequest.Builder {
diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
index cd914d3..7b769d4 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
@@ -18,6 +18,7 @@
 import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
 
 import android.Manifest;
+import android.annotation.FlaggedApi;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -28,6 +29,8 @@
 import android.os.Bundle;
 import android.os.ConditionVariable;
 import android.os.IBinder;
+import android.os.Parcel;
+import android.os.Parcelable;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
 import android.util.ArrayMap;
@@ -59,6 +62,14 @@
  */
 @SystemApi
 public class TetheringManager {
+    // TODO : remove this class when udc-mainline-prod is abandoned and android.net.flags.Flags is
+    // available here
+    /** @hide */
+    public static class Flags {
+        static final String TETHERING_REQUEST_WITH_SOFT_AP_CONFIG =
+                "com.android.net.flags.tethering_request_with_soft_ap_config";
+    }
+
     private static final String TAG = TetheringManager.class.getSimpleName();
     private static final int DEFAULT_TIMEOUT_MS = 60_000;
     private static final long CONNECTOR_POLL_INTERVAL_MILLIS = 200L;
@@ -673,14 +684,44 @@
     /**
      *  Use with {@link #startTethering} to specify additional parameters when starting tethering.
      */
-    public static class TetheringRequest {
+    public static final class TetheringRequest implements Parcelable {
         /** A configuration set for TetheringRequest. */
         private final TetheringRequestParcel mRequestParcel;
 
-        private TetheringRequest(final TetheringRequestParcel request) {
+        private TetheringRequest(@NonNull final TetheringRequestParcel request) {
             mRequestParcel = request;
         }
 
+        private TetheringRequest(@NonNull Parcel in) {
+            mRequestParcel = in.readParcelable(TetheringRequestParcel.class.getClassLoader());
+        }
+
+        @FlaggedApi(Flags.TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @NonNull
+        public static final Creator<TetheringRequest> CREATOR = new Creator<>() {
+            @Override
+            public TetheringRequest createFromParcel(@NonNull Parcel in) {
+                return new TetheringRequest(in);
+            }
+
+            @Override
+            public TetheringRequest[] newArray(int size) {
+                return new TetheringRequest[size];
+            }
+        };
+
+        @FlaggedApi(Flags.TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @FlaggedApi(Flags.TETHERING_REQUEST_WITH_SOFT_AP_CONFIG)
+        @Override
+        public void writeToParcel(@NonNull Parcel dest, int flags) {
+            dest.writeParcelable(mRequestParcel, flags);
+        }
+
         /** Builder used to create TetheringRequest. */
         public static class Builder {
             private final TetheringRequestParcel mBuilderParcel;