diff --git a/framework/Android.bp b/framework/Android.bp
index 9da27d2..86b85e8 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -23,7 +23,6 @@
     default_applicable_licenses: ["frameworks_base_license"],
 }
 
-// TODO: use a java_library in the bootclasspath instead
 filegroup {
     name: "framework-connectivity-internal-sources",
     srcs: [
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index c3b1800..cc95a7c 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -8,7 +8,7 @@
   public class ConnectivityManager {
     method @NonNull @RequiresPermission(anyOf={android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, android.Manifest.permission.NETWORK_STACK, android.Manifest.permission.NETWORK_SETTINGS}) public java.util.List<android.net.NetworkStateSnapshot> getAllNetworkStateSnapshot();
     method @NonNull public static android.util.Range<java.lang.Integer> getIpSecNetIdRange();
-    method @NonNull public static String getPrivateDnsMode(@NonNull android.content.ContentResolver);
+    method @NonNull public static String getPrivateDnsMode(@NonNull android.content.Context);
     method @RequiresPermission(anyOf={android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, android.Manifest.permission.NETWORK_SETTINGS}) public void registerSystemDefaultNetworkCallback(@NonNull android.net.ConnectivityManager.NetworkCallback, @NonNull android.os.Handler);
     method @RequiresPermission(anyOf={android.Manifest.permission.NETWORK_SETTINGS, android.Manifest.permission.NETWORK_STACK, android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK}) public void requestBackgroundNetwork(@NonNull android.net.NetworkRequest, @NonNull android.os.Handler, @NonNull android.net.ConnectivityManager.NetworkCallback);
     method @RequiresPermission(anyOf={android.Manifest.permission.MANAGE_TEST_NETWORKS, android.Manifest.permission.NETWORK_STACK}) public void simulateDataStall(int, long, @NonNull android.net.Network, @NonNull android.os.PersistableBundle);
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index d7cae2f..6bf19bf 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -2292,7 +2292,7 @@
             @NonNull String callingPackage, @Nullable String callingAttributionTag,
             boolean throwException) {
         return Settings.checkAndNoteWriteSettingsOperation(context, uid, callingPackage,
-                throwException);
+                callingAttributionTag, throwException);
     }
 
     /**
@@ -5142,7 +5142,8 @@
     /**
      * Get private DNS mode from settings.
      *
-     * @param cr The ContentResolver to query private DNS mode from settings.
+     * @param context The Context to get its ContentResolver to query the private DNS mode from
+     *                settings.
      * @return A string of private DNS mode as one of the PRIVATE_DNS_MODE_* constants.
      *
      * @hide
@@ -5150,7 +5151,8 @@
     @SystemApi(client = MODULE_LIBRARIES)
     @NonNull
     @PrivateDnsMode
-    public static String getPrivateDnsMode(@NonNull ContentResolver cr) {
+    public static String getPrivateDnsMode(@NonNull Context context) {
+        final ContentResolver cr = context.getContentResolver();
         String mode = Settings.Global.getString(cr, PRIVATE_DNS_MODE);
         if (TextUtils.isEmpty(mode)) mode = Settings.Global.getString(cr, PRIVATE_DNS_DEFAULT_MODE);
         // If both PRIVATE_DNS_MODE and PRIVATE_DNS_DEFAULT_MODE are not set, choose
diff --git a/services/core/java/com/android/server/connectivity/DnsManager.java b/services/core/java/com/android/server/connectivity/DnsManager.java
index 7a5abf8..702434b 100644
--- a/services/core/java/com/android/server/connectivity/DnsManager.java
+++ b/services/core/java/com/android/server/connectivity/DnsManager.java
@@ -127,13 +127,17 @@
     private static final int DNS_RESOLVER_DEFAULT_MIN_SAMPLES = 8;
     private static final int DNS_RESOLVER_DEFAULT_MAX_SAMPLES = 64;
 
-    public static PrivateDnsConfig getPrivateDnsConfig(ContentResolver cr) {
-        final String mode = ConnectivityManager.getPrivateDnsMode(cr);
+    /**
+     * Get PrivateDnsConfig.
+     */
+    public static PrivateDnsConfig getPrivateDnsConfig(Context context) {
+        final String mode = ConnectivityManager.getPrivateDnsMode(context);
 
         final boolean useTls = !TextUtils.isEmpty(mode) && !PRIVATE_DNS_MODE_OFF.equals(mode);
 
         if (PRIVATE_DNS_MODE_PROVIDER_HOSTNAME.equals(mode)) {
-            final String specifier = getStringSetting(cr, PRIVATE_DNS_SPECIFIER);
+            final String specifier = getStringSetting(context.getContentResolver(),
+                    PRIVATE_DNS_SPECIFIER);
             return new PrivateDnsConfig(specifier, null);
         }
 
@@ -268,7 +272,7 @@
     }
 
     public PrivateDnsConfig getPrivateDnsConfig() {
-        return getPrivateDnsConfig(mContentResolver);
+        return getPrivateDnsConfig(mContext);
     }
 
     public void removeNetwork(Network network) {
diff --git a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
index 5e6b9f3..2e51be3 100644
--- a/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
+++ b/services/core/java/com/android/server/connectivity/NetworkDiagnostics.java
@@ -36,7 +36,7 @@
 import android.util.Pair;
 
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.internal.util.TrafficStatsConstants;
+import com.android.net.module.util.NetworkStackConstants;
 
 import libcore.io.IoUtils;
 
@@ -446,7 +446,7 @@
                 int sockType, int protocol, long writeTimeout, long readTimeout, int dstPort)
                 throws ErrnoException, IOException {
             final int oldTag = TrafficStats.getAndSetThreadStatsTag(
-                    TrafficStatsConstants.TAG_SYSTEM_PROBE);
+                    NetworkStackConstants.TAG_SYSTEM_PROBE);
             try {
                 mFileDescriptor = Os.socket(mAddressFamily, sockType, protocol);
             } finally {
@@ -745,7 +745,7 @@
             if (ensureMeasurementNecessary()) return;
 
             // No need to restore the tag, since this thread is only used for this measurement.
-            TrafficStats.getAndSetThreadStatsTag(TrafficStatsConstants.TAG_SYSTEM_PROBE);
+            TrafficStats.getAndSetThreadStatsTag(NetworkStackConstants.TAG_SYSTEM_PROBE);
 
             try (SSLSocket sslSocket = setupSSLSocket()) {
                 sendDoTProbe(sslSocket);
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index b894b02..58d8ee5 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -3748,7 +3748,7 @@
      * @return the context's attribution tag
      */
     private String getAttributionTag() {
-        return null;
+        return mContext.getAttributionTag();
     }
 
     @Test
diff --git a/tests/net/java/com/android/server/connectivity/DnsManagerTest.java b/tests/net/java/com/android/server/connectivity/DnsManagerTest.java
index 5760211..b7ece8f 100644
--- a/tests/net/java/com/android/server/connectivity/DnsManagerTest.java
+++ b/tests/net/java/com/android/server/connectivity/DnsManagerTest.java
@@ -312,14 +312,14 @@
     @Test
     public void testOverrideDefaultMode() throws Exception {
         // Hard-coded default is opportunistic mode.
-        final PrivateDnsConfig cfgAuto = DnsManager.getPrivateDnsConfig(mContentResolver);
+        final PrivateDnsConfig cfgAuto = DnsManager.getPrivateDnsConfig(mCtx);
         assertTrue(cfgAuto.useTls);
         assertEquals("", cfgAuto.hostname);
         assertEquals(new InetAddress[0], cfgAuto.ips);
 
         // Pretend a gservices push sets the default to "off".
         Settings.Global.putString(mContentResolver, PRIVATE_DNS_DEFAULT_MODE, "off");
-        final PrivateDnsConfig cfgOff = DnsManager.getPrivateDnsConfig(mContentResolver);
+        final PrivateDnsConfig cfgOff = DnsManager.getPrivateDnsConfig(mCtx);
         assertFalse(cfgOff.useTls);
         assertEquals("", cfgOff.hostname);
         assertEquals(new InetAddress[0], cfgOff.ips);
@@ -328,7 +328,7 @@
         Settings.Global.putString(
                 mContentResolver, PRIVATE_DNS_MODE, PRIVATE_DNS_MODE_PROVIDER_HOSTNAME);
         Settings.Global.putString(mContentResolver, PRIVATE_DNS_SPECIFIER, "strictmode.com");
-        final PrivateDnsConfig cfgStrict = DnsManager.getPrivateDnsConfig(mContentResolver);
+        final PrivateDnsConfig cfgStrict = DnsManager.getPrivateDnsConfig(mCtx);
         assertTrue(cfgStrict.useTls);
         assertEquals("strictmode.com", cfgStrict.hostname);
         assertEquals(new InetAddress[0], cfgStrict.ips);
diff --git a/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java b/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
index ff8c632..d01dc03 100644
--- a/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
+++ b/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
@@ -20,6 +20,7 @@
 
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
+import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.mock;
@@ -39,6 +40,7 @@
 import android.net.NetworkInfo;
 import android.os.UserHandle;
 import android.telephony.TelephonyManager;
+import android.util.DisplayMetrics;
 
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
@@ -88,6 +90,7 @@
 
     @Mock Context mCtx;
     @Mock Resources mResources;
+    @Mock DisplayMetrics mDisplayMetrics;
     @Mock PackageManager mPm;
     @Mock TelephonyManager mTelephonyManager;
     @Mock NotificationManager mNotificationManager;
@@ -99,6 +102,17 @@
 
     NetworkNotificationManager mManager;
 
+
+    @BeforeClass
+    public static void setUpClass() {
+        Notification.DevFlags.sForceDefaults = true;
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        Notification.DevFlags.sForceDefaults = false;
+    }
+
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
@@ -109,6 +123,7 @@
         mCellNai.networkInfo = mNetworkInfo;
         mVpnNai.networkCapabilities = VPN_CAPABILITIES;
         mVpnNai.networkInfo = mNetworkInfo;
+        mDisplayMetrics.density = 2.275f;
         doReturn(true).when(mVpnNai).isVPN();
         when(mCtx.getResources()).thenReturn(mResources);
         when(mCtx.getPackageManager()).thenReturn(mPm);
@@ -120,6 +135,7 @@
                 .thenReturn(mNotificationManager);
         when(mNetworkInfo.getExtraInfo()).thenReturn(TEST_EXTRA_INFO);
         when(mResources.getColor(anyInt(), any())).thenReturn(0xFF607D8B);
+        when(mResources.getDisplayMetrics()).thenReturn(mDisplayMetrics);
 
         mManager = new NetworkNotificationManager(mCtx, mTelephonyManager);
     }
@@ -142,15 +158,15 @@
     public void testTitleOfPrivateDnsBroken() {
         // Test the title of mobile data.
         verifyTitleByNetwork(100, mCellNai, R.string.mobile_no_internet);
-        reset(mResources);
+        clearInvocations(mResources);
 
         // Test the title of wifi.
         verifyTitleByNetwork(101, mWifiNai, R.string.wifi_no_internet);
-        reset(mResources);
+        clearInvocations(mResources);
 
         // Test the title of other networks.
         verifyTitleByNetwork(102, mVpnNai, R.string.other_networks_no_internet);
-        reset(mResources);
+        clearInvocations(mResources);
     }
 
     @Test