diff --git a/core/java/android/net/NetworkStats.java b/core/java/android/net/NetworkStats.java
index 446bbf0509..c7576057e1 100644
--- a/core/java/android/net/NetworkStats.java
+++ b/core/java/android/net/NetworkStats.java
@@ -21,6 +21,7 @@ import android.os.Parcelable;
 import android.os.SystemClock;
 import android.util.SparseBooleanArray;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.Objects;
 
@@ -190,14 +191,14 @@ public class NetworkStats implements Parcelable {
         return clone;
     }
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public NetworkStats addIfaceValues(
             String iface, long rxBytes, long rxPackets, long txBytes, long txPackets) {
         return addValues(
                 iface, UID_ALL, SET_DEFAULT, TAG_NONE, rxBytes, rxPackets, txBytes, txPackets, 0L);
     }
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public NetworkStats addValues(String iface, int uid, int set, int tag, long rxBytes,
             long rxPackets, long txBytes, long txPackets, long operations) {
         return addValues(new Entry(
@@ -269,7 +270,7 @@ public class NetworkStats implements Parcelable {
         return size;
     }
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public int internalSize() {
         return iface.length;
     }
@@ -335,7 +336,7 @@ public class NetworkStats implements Parcelable {
      * Find first stats index that matches the requested parameters, starting
      * search around the hinted index as an optimization.
      */
-    // @VisibleForTesting
+    @VisibleForTesting
     public int findIndexHinted(String iface, int uid, int set, int tag, int hintIndex) {
         for (int offset = 0; offset < size; offset++) {
             final int halfOffset = offset / 2;
diff --git a/core/java/android/net/NetworkTemplate.java b/core/java/android/net/NetworkTemplate.java
index d8e53d523f..d3839ad435 100644
--- a/core/java/android/net/NetworkTemplate.java
+++ b/core/java/android/net/NetworkTemplate.java
@@ -33,6 +33,7 @@ import android.content.res.Resources;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.Objects;
 
 /**
@@ -63,7 +64,7 @@ public class NetworkTemplate implements Parcelable {
 
     private static boolean sForceAllNetworkTypes = false;
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public static void forceAllNetworkTypes() {
         sForceAllNetworkTypes = true;
     }
diff --git a/core/java/com/android/internal/net/NetworkStatsFactory.java b/core/java/com/android/internal/net/NetworkStatsFactory.java
index 8b222f02a3..c517a68e2b 100644
--- a/core/java/com/android/internal/net/NetworkStatsFactory.java
+++ b/core/java/com/android/internal/net/NetworkStatsFactory.java
@@ -25,6 +25,7 @@ import android.net.NetworkStats;
 import android.os.StrictMode;
 import android.os.SystemClock;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.ProcFileReader;
 
 import java.io.File;
@@ -53,7 +54,7 @@ public class NetworkStatsFactory {
         this(new File("/proc/"));
     }
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public NetworkStatsFactory(File procRoot) {
         mStatsXtIfaceAll = new File(procRoot, "net/xt_qtaguid/iface_stat_all");
         mStatsXtIfaceFmt = new File(procRoot, "net/xt_qtaguid/iface_stat_fmt");
diff --git a/services/java/com/android/server/NativeDaemonConnector.java b/services/java/com/android/server/NativeDaemonConnector.java
index 92af9a9e6a..5e94a9fc76 100644
--- a/services/java/com/android/server/NativeDaemonConnector.java
+++ b/services/java/com/android/server/NativeDaemonConnector.java
@@ -25,6 +25,7 @@ import android.os.SystemClock;
 import android.util.LocalLog;
 import android.util.Slog;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.google.android.collect.Lists;
 
 import java.nio.charset.Charsets;
@@ -400,7 +401,7 @@ final class NativeDaemonConnector implements Runnable, Handler.Callback, Watchdo
      * Append the given argument to {@link StringBuilder}, escaping as needed,
      * and surrounding with quotes when it contains spaces.
      */
-    // @VisibleForTesting
+    @VisibleForTesting
     static void appendEscaped(StringBuilder builder, String arg) {
         final boolean hasSpaces = arg.indexOf(' ') >= 0;
         if (hasSpaces) {
diff --git a/services/java/com/android/server/net/NetworkStatsService.java b/services/java/com/android/server/net/NetworkStatsService.java
index 0efdead7f9..7101520e80 100644
--- a/services/java/com/android/server/net/NetworkStatsService.java
+++ b/services/java/com/android/server/net/NetworkStatsService.java
@@ -115,6 +115,7 @@ import android.util.Slog;
 import android.util.SparseIntArray;
 import android.util.TrustedTime;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.FileRotator;
 import com.android.internal.util.IndentingPrintWriter;
@@ -165,7 +166,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
 
     private IConnectivityManager mConnManager;
 
-    // @VisibleForTesting
+    @VisibleForTesting
     public static final String ACTION_NETWORK_STATS_POLL =
             "com.android.server.action.NETWORK_STATS_POLL";
     public static final String ACTION_NETWORK_STATS_UPDATED =