Change Network Watchlist feature flag

Bug: 63908748
Test: From log, feature is enabled/disabled when setting is enabled/disabled
Change-Id: Ifa41ea98b3ab27bdc6c06f07cb9766406427b3fc
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index d118219..8b5a7b7 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -9750,6 +9750,14 @@
         public static final java.lang.String APP_STANDBY_ENABLED = "app_standby_enabled";
 
         /**
+         * Whether or not Network Watchlist feature is enabled.
+         * Type: int (0 for false, 1 for true)
+         * Default: 0
+         * @hide
+         */
+        public static final String NETWORK_WATCHLIST_ENABLED = "network_watchlist_enabled";
+
+        /**
          * Get the key that retrieves a bluetooth headset's priority.
          * @hide
          */
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 78d7785..c9be3c0 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -280,6 +280,7 @@
                     Settings.Global.NETWORK_SCORING_UI_ENABLED,
                     Settings.Global.NETWORK_SWITCH_NOTIFICATION_DAILY_LIMIT,
                     Settings.Global.NETWORK_SWITCH_NOTIFICATION_RATE_LIMIT_MILLIS,
+                    Settings.Global.NETWORK_WATCHLIST_ENABLED,
                     Settings.Global.NEW_CONTACT_AGGREGATOR,
                     Settings.Global.NITZ_UPDATE_DIFF,
                     Settings.Global.NITZ_UPDATE_SPACING,
diff --git a/services/core/java/com/android/server/net/watchlist/NetworkWatchlistService.java b/services/core/java/com/android/server/net/watchlist/NetworkWatchlistService.java
index 171703a..6f48c60 100644
--- a/services/core/java/com/android/server/net/watchlist/NetworkWatchlistService.java
+++ b/services/core/java/com/android/server/net/watchlist/NetworkWatchlistService.java
@@ -29,6 +29,7 @@
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.SystemProperties;
+import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Slog;
 
@@ -52,9 +53,6 @@
     private static final String TAG = NetworkWatchlistService.class.getSimpleName();
     static final boolean DEBUG = false;
 
-    private static final String PROPERTY_NETWORK_WATCHLIST_ENABLED =
-            "ro.network_watchlist_enabled";
-
     private static final int MAX_NUM_OF_WATCHLIST_DIGESTS = 10000;
 
     public static class Lifecycle extends SystemService {
@@ -66,8 +64,10 @@
 
         @Override
         public void onStart() {
-            if (!SystemProperties.getBoolean(PROPERTY_NETWORK_WATCHLIST_ENABLED, false)) {
+            if (Settings.Global.getInt(getContext().getContentResolver(),
+                    Settings.Global.NETWORK_WATCHLIST_ENABLED, 0) == 0) {
                 // Watchlist service is disabled
+                Slog.i(TAG, "Network Watchlist service is disabled");
                 return;
             }
             mService = new NetworkWatchlistService(getContext());
@@ -76,11 +76,13 @@
 
         @Override
         public void onBootPhase(int phase) {
-            if (!SystemProperties.getBoolean(PROPERTY_NETWORK_WATCHLIST_ENABLED, false)) {
-                // Watchlist service is disabled
-                return;
-            }
             if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) {
+                if (Settings.Global.getInt(getContext().getContentResolver(),
+                        Settings.Global.NETWORK_WATCHLIST_ENABLED, 0) == 0) {
+                    // Watchlist service is disabled
+                    Slog.i(TAG, "Network Watchlist service is disabled");
+                    return;
+                }
                 try {
                     mService.initIpConnectivityMetrics();
                     mService.startWatchlistLogging();