[MS68.3] Address comments at aosp/1958144

Test: atest TrafficStatsTest NetworkUsageStatsTest FrameworksNetTests
Bug: 204830222

(cherry-picked from ag/16813003)

Change-Id: I5a54b44294021d64d8506eeb570db0db8544472a
Merged-In: I5a54b44294021d64d8506eeb570db0db8544472a

framework-t/src/android/app/usage/NetworkStatsManager.java

@@ -740,8 +740,9 @@ public class NetworkStatsManager {
      * {@link #unregisterUsageCallback} is called.
      *
      * @param template Template used to match networks. See {@link NetworkTemplate}.
-     * @param thresholdBytes Threshold in bytes to be notified on. The provided value that lower
-     *                       than 2MiB will be clamped for non-privileged callers.
+     * @param thresholdBytes Threshold in bytes to be notified on. Provided values lower than 2MiB
+     *                       will be clamped for callers except callers with the NETWORK_STACK
+     *                       permission.
      * @param executor The executor on which callback will be invoked. The provided {@link Executor}
      *                 must run callback sequentially, otherwise the order of callbacks cannot be
      *                 guaranteed.
@@ -750,6 +751,9 @@ public class NetworkStatsManager {
      * @hide
      */
     @SystemApi(client = MODULE_LIBRARIES)
+    @RequiresPermission(anyOf = {
+            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
+            android.Manifest.permission.NETWORK_STACK}, conditional = true)
     public void registerUsageCallback(@NonNull NetworkTemplate template, long thresholdBytes,
             @NonNull @CallbackExecutor Executor executor, @NonNull UsageCallback callback) {
         Objects.requireNonNull(template, "NetworkTemplate cannot be null");