diff --git a/Cronet/tools/import/import_cronet.sh b/Cronet/tools/import/import_cronet.sh
index 6639a4c..0f04af7 100755
--- a/Cronet/tools/import/import_cronet.sh
+++ b/Cronet/tools/import/import_cronet.sh
@@ -24,6 +24,8 @@
 #   -n rev: The new revision to import.
 #   -f: Force copybara to ignore a failure to find the last imported revision.
 
+set -e -x
+
 OPTSTRING=fl:n:
 
 usage() {
@@ -55,7 +57,7 @@
 # Arguments:
 #   new_rev, string
 #######################################
-setup_folder_origin() {
+setup_folder_origin() (
     local _new_rev=$1
     mkdir -p "${COPYBARA_FOLDER_ORIGIN}"
     cd "${COPYBARA_FOLDER_ORIGIN}"
@@ -83,9 +85,10 @@
     cd src
     # Set appropriate gclient flags to speed up syncing.
     gclient sync \
-        --no-history
-        --shallow
-}
+        --no-history \
+        --shallow \
+        --delete_unversioned_trees
+)
 
 #######################################
 # Runs the copybara import of Chromium
diff --git a/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
index 6b7222a..7e288c6 100644
--- a/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
@@ -18,6 +18,7 @@
 
 import static android.net.NetworkAgent.CMD_START_SOCKET_KEEPALIVE;
 import static android.net.SocketKeepalive.ERROR_INVALID_SOCKET;
+import static android.net.SocketKeepalive.MIN_INTERVAL_SEC;
 import static android.net.SocketKeepalive.SUCCESS_PAUSED;
 import static android.provider.DeviceConfig.NAMESPACE_TETHERING;
 import static android.system.OsConstants.AF_INET;
@@ -88,8 +89,8 @@
 public class AutomaticOnOffKeepaliveTracker {
     private static final String TAG = "AutomaticOnOffKeepaliveTracker";
     private static final int[] ADDRESS_FAMILIES = new int[] {AF_INET6, AF_INET};
-    private static final long DEFAULT_TCP_POLLING_INTERVAL_MS = 120_000L;
     private static final long LOW_TCP_POLLING_INTERVAL_MS = 1_000L;
+    private static final int ADJUST_TCP_POLLING_DELAY_MS = 2000;
     private static final String AUTOMATIC_ON_OFF_KEEPALIVE_VERSION =
             "automatic_on_off_keepalive_version";
     /**
@@ -178,8 +179,7 @@
         private final Network mUnderpinnedNetwork;
 
         AutomaticOnOffKeepalive(@NonNull final KeepaliveTracker.KeepaliveInfo ki,
-                final boolean autoOnOff, @NonNull Context context,
-                @Nullable Network underpinnedNetwork)
+                final boolean autoOnOff, @Nullable Network underpinnedNetwork)
                 throws InvalidSocketException {
             this.mKi = Objects.requireNonNull(ki);
             mCallback = ki.mCallback;
@@ -280,12 +280,14 @@
         mAlarmManager = mDependencies.getAlarmManager(context);
     }
 
-    private void startTcpPollingAlarm(@NonNull final AlarmManager.OnAlarmListener listener) {
+    private void startTcpPollingAlarm(@NonNull AutomaticOnOffKeepalive ki) {
+        if (ki.mAlarmListener == null) return;
+
         final long triggerAtMillis =
-                SystemClock.elapsedRealtime() + getTcpPollingInterval();
+                mDependencies.getElapsedRealtime() + getTcpPollingIntervalMs(ki);
         // Setup a non-wake up alarm.
         mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME, triggerAtMillis, null /* tag */,
-                listener, mConnectivityServiceHandler);
+                ki.mAlarmListener, mConnectivityServiceHandler);
     }
 
     /**
@@ -322,7 +324,7 @@
             handleMaybeResumeKeepalive(ki);
         }
         // TODO: listen to socket status instead of periodically check.
-        startTcpPollingAlarm(ki.mAlarmListener);
+        startTcpPollingAlarm(ki);
     }
 
     /**
@@ -402,7 +404,7 @@
         }
         mAutomaticOnOffKeepalives.add(autoKi);
         if (STATE_ALWAYS_ON != autoKi.mAutomaticOnOffState) {
-            startTcpPollingAlarm(autoKi.mAlarmListener);
+            startTcpPollingAlarm(autoKi);
         }
     }
 
@@ -463,7 +465,7 @@
         if (null == ki) return;
         try {
             final AutomaticOnOffKeepalive autoKi = new AutomaticOnOffKeepalive(ki,
-                    automaticOnOffKeepalives, mContext, underpinnedNetwork);
+                    automaticOnOffKeepalives, underpinnedNetwork);
             mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
                     // TODO : move ConnectivityService#encodeBool to a static lib.
                     automaticOnOffKeepalives ? 1 : 0, 0, autoKi).sendToTarget();
@@ -493,7 +495,7 @@
         if (null == ki) return;
         try {
             final AutomaticOnOffKeepalive autoKi = new AutomaticOnOffKeepalive(ki,
-                    automaticOnOffKeepalives, mContext, underpinnedNetwork);
+                    automaticOnOffKeepalives, underpinnedNetwork);
             mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
                     // TODO : move ConnectivityService#encodeBool to a static lib.
                     automaticOnOffKeepalives ? 1 : 0, 0, autoKi).sendToTarget();
@@ -523,7 +525,7 @@
         try {
             final AutomaticOnOffKeepalive autoKi = new AutomaticOnOffKeepalive(ki,
                     false /* autoOnOff, tcp keepalives are never auto on/off */,
-                    mContext, null /* underpinnedNetwork, tcp keepalives do not refer to this */);
+                    null /* underpinnedNetwork, tcp keepalives do not refer to this */);
             mConnectivityServiceHandler.obtainMessage(CMD_START_SOCKET_KEEPALIVE, autoKi)
                     .sendToTarget();
         } catch (InvalidSocketException e) {
@@ -677,9 +679,15 @@
         }
     }
 
-    private long getTcpPollingInterval() {
+    private long getTcpPollingIntervalMs(@NonNull AutomaticOnOffKeepalive ki) {
         final boolean useLowTimer = mTestLowTcpPollingTimerUntilMs > System.currentTimeMillis();
-        return useLowTimer ? LOW_TCP_POLLING_INTERVAL_MS : DEFAULT_TCP_POLLING_INTERVAL_MS;
+        // Adjust the polling interval to be smaller than the keepalive delay to preserve
+        // some time for the system to restart the keepalive.
+        final int timer = ki.mKi.getKeepaliveIntervalSec() * 1000 - ADJUST_TCP_POLLING_DELAY_MS;
+        if (timer < MIN_INTERVAL_SEC) {
+            Log.wtf(TAG, "Unreasonably low keepalive delay: " + ki.mKi.getKeepaliveIntervalSec());
+        }
+        return useLowTimer ? LOW_TCP_POLLING_INTERVAL_MS : Math.max(timer, MIN_INTERVAL_SEC);
     }
 
     /**
@@ -786,5 +794,14 @@
             return DeviceConfigUtils.isFeatureEnabled(mContext, NAMESPACE_TETHERING, name,
                     defaultEnabled);
         }
+
+        /**
+         * Returns milliseconds since boot, including time spent in sleep.
+         *
+         * @return elapsed milliseconds since boot.
+         */
+        public long getElapsedRealtime() {
+            return SystemClock.elapsedRealtime();
+        }
     }
 }
diff --git a/service/src/com/android/server/connectivity/KeepaliveTracker.java b/service/src/com/android/server/connectivity/KeepaliveTracker.java
index 06294db..60485b3 100644
--- a/service/src/com/android/server/connectivity/KeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveTracker.java
@@ -264,6 +264,10 @@
             return mSlot;
         }
 
+        int getKeepaliveIntervalSec() {
+            return mInterval;
+        }
+
         private int checkNetworkConnected() {
             if (!mNai.networkInfo.isConnectedOrConnecting()) {
                 return ERROR_INVALID_NETWORK;
diff --git a/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
index 4f0b9c4..696eff4 100644
--- a/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
+++ b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
@@ -28,8 +28,8 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyInt;
-import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.ArgumentMatchers.longThat;
 import static org.mockito.Mockito.doNothing;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
@@ -57,6 +57,7 @@
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
+import android.os.SystemClock;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.util.Log;
 
@@ -94,6 +95,7 @@
     private static final int NETID_MASK = 0xffff;
     private static final int TIMEOUT_MS = 30_000;
     private static final int MOCK_RESOURCE_ID = 5;
+    private static final int TEST_KEEPALIVE_INTERVAL_SEC = 10;
     private AutomaticOnOffKeepaliveTracker mAOOKeepaliveTracker;
     private HandlerThread mHandlerThread;
 
@@ -334,9 +336,13 @@
         final KeepalivePacketData kpd = new NattKeepalivePacketData(srcAddress, srcPort,
                 dstAddress, dstPort, new byte[] {1});
         final KeepaliveInfo ki = mKeepaliveTracker.new KeepaliveInfo(cb, nai, kpd,
-                10 /* interval */, KeepaliveInfo.TYPE_NATT, fd);
+                TEST_KEEPALIVE_INTERVAL_SEC, KeepaliveInfo.TYPE_NATT, fd);
         mKeepaliveTracker.setReturnedKeepaliveInfo(ki);
 
+        // Mock elapsed real time to verify the alarm timer.
+        final long time = SystemClock.elapsedRealtime();
+        doReturn(time).when(mDependencies).getElapsedRealtime();
+
         mAOOKeepaliveTracker.startNattKeepalive(nai, fd, 10 /* intervalSeconds */, cb,
                 srcAddress.toString(), srcPort, dstAddress.toString(), dstPort,
                 true /* automaticOnOffKeepalives */, underpinnedNetwork);
@@ -344,8 +350,11 @@
 
         final ArgumentCaptor<AlarmManager.OnAlarmListener> listenerCaptor =
                 ArgumentCaptor.forClass(AlarmManager.OnAlarmListener.class);
-        verify(mAlarmManager).setExact(eq(AlarmManager.ELAPSED_REALTIME), anyLong(),
-                any(), listenerCaptor.capture(), eq(mTestHandler));
+        // The alarm timer should be smaller than the keepalive delay. Verify the alarm trigger time
+        // is higher than base time but smaller than the keepalive delay.
+        verify(mAlarmManager).setExact(eq(AlarmManager.ELAPSED_REALTIME),
+                longThat(t -> t > time + 1000L && t < time + TEST_KEEPALIVE_INTERVAL_SEC * 1000L),
+                any() /* tag */, listenerCaptor.capture(), eq(mTestHandler));
         final AlarmManager.OnAlarmListener listener = listenerCaptor.getValue();
 
         // For realism, the listener should be posted on the handler
diff --git a/tests/unit/java/com/android/server/connectivity/VpnTest.java b/tests/unit/java/com/android/server/connectivity/VpnTest.java
index 79987e6..dd9177ee 100644
--- a/tests/unit/java/com/android/server/connectivity/VpnTest.java
+++ b/tests/unit/java/com/android/server/connectivity/VpnTest.java
@@ -48,6 +48,7 @@
 
 import static com.android.net.module.util.NetworkStackConstants.IPV6_MIN_MTU;
 import static com.android.server.connectivity.Vpn.AUTOMATIC_KEEPALIVE_DELAY_SECONDS;
+import static com.android.server.connectivity.Vpn.DEFAULT_LONG_LIVED_TCP_CONNS_EXPENSIVE_TIMEOUT_SEC;
 import static com.android.server.connectivity.Vpn.DEFAULT_UDP_PORT_4500_NAT_TIMEOUT_SEC_INT;
 import static com.android.server.connectivity.Vpn.PREFERRED_IKE_PROTOCOL_AUTO;
 import static com.android.server.connectivity.Vpn.PREFERRED_IKE_PROTOCOL_IPV4_UDP;
@@ -1860,6 +1861,13 @@
 
     private PlatformVpnSnapshot verifySetupPlatformVpn(VpnProfile vpnProfile,
             IkeSessionConfiguration ikeConfig, boolean mtuSupportsIpv6) throws Exception {
+        return verifySetupPlatformVpn(vpnProfile, ikeConfig, mtuSupportsIpv6,
+                false /* areLongLivedTcpConnectionsExpensive */);
+    }
+
+    private PlatformVpnSnapshot verifySetupPlatformVpn(VpnProfile vpnProfile,
+            IkeSessionConfiguration ikeConfig, boolean mtuSupportsIpv6,
+            boolean areLongLivedTcpConnectionsExpensive) throws Exception {
         if (!mtuSupportsIpv6) {
             doReturn(IPV6_MIN_MTU - 1).when(mTestDeps).calculateVpnMtu(any(), anyInt(), anyInt(),
                     anyBoolean());
@@ -1942,8 +1950,10 @@
 
         // Check if allowBypass is set or not.
         assertTrue(nacCaptor.getValue().isBypassableVpn());
-        assertTrue(((VpnTransportInfo) ncCaptor.getValue().getTransportInfo()).isBypassable());
-
+        final VpnTransportInfo info = (VpnTransportInfo) ncCaptor.getValue().getTransportInfo();
+        assertTrue(info.isBypassable());
+        assertEquals(areLongLivedTcpConnectionsExpensive,
+                info.areLongLivedTcpConnectionsExpensive());
         return new PlatformVpnSnapshot(vpn, nwCb, ikeCb, childCb);
     }
 
@@ -2069,7 +2079,8 @@
         final PlatformVpnSnapshot vpnSnapShot =
                 verifySetupPlatformVpn(profile,
                         createIkeConfig(createIkeConnectInfo(), true /* isMobikeEnabled */),
-                        false /* mtuSupportsIpv6 */);
+                        false /* mtuSupportsIpv6 */,
+                        expectedKeepalive < DEFAULT_LONG_LIVED_TCP_CONNS_EXPENSIVE_TIMEOUT_SEC);
         // Simulate a new network coming up
         vpnSnapShot.nwCb.onAvailable(TEST_NETWORK_2);
         verify(mIkeSessionWrapper, never()).setNetwork(any(), anyInt(), anyInt(), anyInt());
@@ -2116,7 +2127,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV4_UDP,
                 AUTOMATIC_KEEPALIVE_DELAY_SECONDS /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_AUTO /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */);
+                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */,
+                false /* expectedReadFromCarrierConfig*/,
+                true /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2126,7 +2139,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV4_UDP,
                 AUTOMATIC_KEEPALIVE_DELAY_SECONDS /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_AUTO /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */);
+                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */,
+                false /* expectedReadFromCarrierConfig*/,
+                true /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2136,7 +2151,9 @@
                 PREFERRED_IKE_PROTOCOL_AUTO,
                 TEST_KEEPALIVE_TIMER /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_AUTO /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */);
+                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */,
+                true /* expectedReadFromCarrierConfig*/,
+                false /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2150,7 +2167,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV4_UDP,
                 AUTOMATIC_KEEPALIVE_DELAY_SECONDS /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_AUTO /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */);
+                ESP_ENCAP_TYPE_AUTO /* expectedEncapType */,
+                false /* expectedReadFromCarrierConfig*/,
+                true /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2160,7 +2179,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV4_UDP,
                 TEST_KEEPALIVE_TIMER /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_IPV4 /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_UDP /* expectedEncapType */);
+                ESP_ENCAP_TYPE_UDP /* expectedEncapType */,
+                true /* expectedReadFromCarrierConfig*/,
+                false /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2170,7 +2191,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV6_ESP,
                 TEST_KEEPALIVE_TIMER /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_IPV6 /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_NONE /* expectedEncapType */);
+                ESP_ENCAP_TYPE_NONE /* expectedEncapType */,
+                true /* expectedReadFromCarrierConfig*/,
+                false /* areLongLivedTcpConnectionsExpensive */);
     }
 
     @Test
@@ -2180,7 +2203,9 @@
                 PREFERRED_IKE_PROTOCOL_IPV6_UDP,
                 TEST_KEEPALIVE_TIMER /* expectedKeepaliveTimer */,
                 ESP_IP_VERSION_IPV6 /* expectedIpVersion */,
-                ESP_ENCAP_TYPE_UDP /* expectedEncapType */);
+                ESP_ENCAP_TYPE_UDP /* expectedEncapType */,
+                true /* expectedReadFromCarrierConfig*/,
+                false /* areLongLivedTcpConnectionsExpensive */);
     }
 
     private NetworkCapabilities createTestCellNc() {
@@ -2193,7 +2218,9 @@
     }
 
     private void doTestReadCarrierConfig(NetworkCapabilities nc, int simState, int preferredIpProto,
-            int expectedKeepaliveTimer, int expectedIpVersion, int expectedEncapType)
+            int expectedKeepaliveTimer, int expectedIpVersion, int expectedEncapType,
+            boolean expectedReadFromCarrierConfig,
+            boolean areLongLivedTcpConnectionsExpensive)
             throws Exception {
         final Ikev2VpnProfile ikeProfile =
                 new Ikev2VpnProfile.Builder(TEST_VPN_SERVER, TEST_VPN_IDENTITY)
@@ -2206,7 +2233,8 @@
         final PlatformVpnSnapshot vpnSnapShot =
                 verifySetupPlatformVpn(ikeProfile.toVpnProfile(),
                         createIkeConfig(createIkeConnectInfo(), true /* isMobikeEnabled */),
-                        false /* mtuSupportsIpv6 */);
+                        false /* mtuSupportsIpv6 */,
+                        true /* areLongLivedTcpConnectionsExpensive */);
 
         final CarrierConfigManager.CarrierConfigChangeListener listener =
                 getCarrierConfigListener();
@@ -2221,15 +2249,31 @@
         vpnSnapShot.nwCb.onCapabilitiesChanged(TEST_NETWORK_2, nc);
         verify(mIkeSessionWrapper).setNetwork(TEST_NETWORK_2,
                 expectedIpVersion, expectedEncapType, expectedKeepaliveTimer);
+        if (expectedReadFromCarrierConfig) {
+            final ArgumentCaptor<NetworkCapabilities> ncCaptor =
+                    ArgumentCaptor.forClass(NetworkCapabilities.class);
+            verify(mMockNetworkAgent).doSendNetworkCapabilities(ncCaptor.capture());
+
+            final VpnTransportInfo info =
+                    (VpnTransportInfo) ncCaptor.getValue().getTransportInfo();
+            assertEquals(areLongLivedTcpConnectionsExpensive,
+                    info.areLongLivedTcpConnectionsExpensive());
+        } else {
+            verify(mMockNetworkAgent, never()).doSendNetworkCapabilities(any());
+        }
 
         reset(mExecutor);
         reset(mIkeSessionWrapper);
+        reset(mMockNetworkAgent);
 
         // Trigger carrier config change
         listener.onCarrierConfigChanged(1 /* logicalSlotIndex */, TEST_SUB_ID,
                 -1 /* carrierId */, -1 /* specificCarrierId */);
         verify(mIkeSessionWrapper).setNetwork(TEST_NETWORK_2,
                 expectedIpVersion, expectedEncapType, expectedKeepaliveTimer);
+        // Expect no NetworkCapabilities change.
+        // Call to doSendNetworkCapabilities() will not be triggered.
+        verify(mMockNetworkAgent, never()).doSendNetworkCapabilities(any());
     }
 
     @Test
diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index e1ed23e..21482d9 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -995,7 +995,6 @@
         "base/allocator/dispatcher/dispatcher.cc",
         "base/allocator/dispatcher/internal/dispatch_data.cc",
         "base/allocator/dispatcher/reentry_guard.cc",
-        "base/allocator/partition_allocator/shim/allocator_shim.cc",
         "base/allocator/partition_allocator/shim/allocator_shim_default_dispatch_to_linker_wrapped_symbols.cc",
         "base/android/android_hardware_buffer_compat.cc",
         "base/android/android_image_reader_compat.cc",
@@ -1567,6 +1566,11 @@
         "-Wl,-wrap,vasprintf",
     ],
     target: {
+        android: {
+            srcs: [
+                "base/allocator/partition_allocator/shim/allocator_shim.cc",
+            ],
+        },
         android_arm: {
             srcs: [
                 "base/android/reached_code_profiler.cc",
@@ -1606,6 +1610,11 @@
                 "-msse3",
             ],
         },
+        glibc: {
+            srcs: [
+                "base/allocator/partition_allocator/shim/allocator_shim.cc",
+            ],
+        },
     },
 }
 
@@ -1666,7 +1675,6 @@
         "base/allocator/dispatcher/dispatcher.cc",
         "base/allocator/dispatcher/internal/dispatch_data.cc",
         "base/allocator/dispatcher/reentry_guard.cc",
-        "base/allocator/partition_allocator/shim/allocator_shim.cc",
         "base/at_exit.cc",
         "base/barrier_closure.cc",
         "base/base64.cc",
@@ -2135,6 +2143,9 @@
     ],
     target: {
         android: {
+            srcs: [
+                "base/allocator/partition_allocator/shim/allocator_shim.cc",
+            ],
             shared_libs: [
                 "libandroid",
                 "liblog",
@@ -2615,9 +2626,14 @@
                 "-Wl,-wrap,vasprintf",
             ],
         },
+        glibc: {
+            srcs: [
+                "base/allocator/partition_allocator/shim/allocator_shim.cc",
+                "base/allocator/partition_allocator/shim/allocator_shim_default_dispatch_to_glibc.cc",
+            ],
+        },
         host: {
             srcs: [
-                "base/allocator/partition_allocator/shim/allocator_shim_default_dispatch_to_glibc.cc",
                 "base/base_paths_posix.cc",
                 "base/debug/stack_trace_posix.cc",
                 "base/files/file_util_linux.cc",
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 7ab8616..0f12cf3 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -451,6 +451,7 @@
     self.target['android_arm'] = Target('android_arm')
     self.target['android_arm64'] = Target('android_arm64')
     self.target['host'] = Target('host')
+    self.target['glibc'] = Target('glibc')
     self.stl = None
     self.cpp_std = None
     self.dist = dict()
@@ -1760,6 +1761,28 @@
                       for source in get_non_api_java_sources(gn)
                       if source.endswith('.java')])
 
+
+def turn_off_allocator_shim_for_musl(module):
+  allocation_shim = "base/allocator/partition_allocator/shim/allocator_shim.cc"
+  allocator_shim_files = {
+    allocation_shim,
+    "base/allocator/partition_allocator/shim/allocator_shim_default_dispatch_to_glibc.cc",
+  }
+  module.srcs -= allocator_shim_files
+  for arch in module.target.values():
+    arch.srcs -= allocator_shim_files
+  module.target['android'].srcs.add(allocation_shim)
+  if gn_utils.TESTING_SUFFIX in module.name:
+    # allocator_shim_default_dispatch_to_glibc is only added to the __testing version of base
+    # since base_base__testing is compiled for host. When compiling for host. Soong compiles
+    # using glibc or musl(experimental). We currently only support compiling for glibc.
+    module.target['glibc'].srcs.update(allocator_shim_files)
+  else:
+    # allocator_shim_default_dispatch_to_glibc does not exist in the prod version of base
+    # `base_base` since this only compiles for android and bionic is used. Bionic is the equivalent
+    # of glibc but for android.
+    module.target['glibc'].srcs.add(allocation_shim)
+
 def create_blueprint_for_targets(gn, targets, test_targets):
   """Generate a blueprint for a list of GN targets."""
   blueprint = Blueprint()
@@ -1823,6 +1846,8 @@
   for module in blueprint.modules.values():
     if 'cronet_jni_registration' in module.name:
       update_jni_registration_module(module, gn)
+    if module.name in ['cronet_aml_base_base', 'cronet_aml_base_base' + gn_utils.TESTING_SUFFIX]:
+      turn_off_allocator_shim_for_musl(module)
 
   # Merge in additional hardcoded arguments.
   for module in blueprint.modules.values():