diff --git a/browser/brave_ads/background_helper/background_helper_android.cc b/browser/brave_ads/background_helper/background_helper_android.cc
index 4d950efa2f0..eaa19b49d67 100644
--- a/browser/brave_ads/background_helper/background_helper_android.cc
+++ b/browser/brave_ads/background_helper/background_helper_android.cc
@@ -6,7 +6,7 @@
 #include "brave/browser/brave_ads/background_helper/background_helper_android.h"
 
 #include "base/functional/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/functional/callback.h"
 
 namespace brave_ads {
 
diff --git a/browser/brave_ads/background_helper/background_helper_linux.cc b/browser/brave_ads/background_helper/background_helper_linux.cc
index 0e1dd1f759b..47caf7e6203 100644
--- a/browser/brave_ads/background_helper/background_helper_linux.cc
+++ b/browser/brave_ads/background_helper/background_helper_linux.cc
@@ -6,7 +6,7 @@
 #include "brave/browser/brave_ads/background_helper/background_helper_linux.h"
 
 #include "base/functional/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
@@ -43,13 +43,13 @@ bool BackgroundHelperLinux::IsForeground() const {
 }
 
 void BackgroundHelperLinux::OnBrowserSetLastActive(Browser* browser) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&BackgroundHelperLinux::TriggerOnForeground, AsWeakPtr()));
 }
 
 void BackgroundHelperLinux::OnBrowserNoLongerActive(Browser* browser) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&BackgroundHelperLinux::TriggerOnBackground, AsWeakPtr()));
 }
diff --git a/browser/brave_wallet/external_wallets_importer.cc b/browser/brave_wallet/external_wallets_importer.cc
index 1ee7cf3a31c..1e111470c00 100644
--- a/browser/brave_wallet/external_wallets_importer.cc
+++ b/browser/brave_wallet/external_wallets_importer.cc
@@ -13,8 +13,8 @@
 #include "base/json/json_reader.h"
 #include "base/strings/utf_string_conversion_utils.h"
 #include "base/task/bind_post_task.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/types/cxx23_to_underlying.h"
 #include "brave/browser/ethereum_remote_client/buildflags/buildflags.h"
 #include "brave/components/brave_wallet/browser/password_encryptor.h"
@@ -297,7 +297,7 @@ void ExternalWalletsImporter::GetLocalStorage(
       base::BindOnce(
           &OnRunWithStorage,
           base::BindPostTask(
-              base::SequencedTaskRunnerHandle::Get(),
+              base::SequencedTaskRunner::GetCurrentDefault(),
               base::BindOnce(&ExternalWalletsImporter::OnGetLocalStorage,
                              weak_ptr_factory_.GetWeakPtr(),
                              std::move(callback)))));
diff --git a/browser/ephemeral_storage/ephemeral_storage_browsertest.cc b/browser/ephemeral_storage/ephemeral_storage_browsertest.cc
index 4954589a6df..ff9bb712dc6 100644
--- a/browser/ephemeral_storage/ephemeral_storage_browsertest.cc
+++ b/browser/ephemeral_storage/ephemeral_storage_browsertest.cc
@@ -11,8 +11,8 @@
 #include "base/path_service.h"
 #include "base/strings/strcat.h"
 #include "base/strings/stringprintf.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/test/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "brave/browser/ephemeral_storage/ephemeral_storage_tab_helper.h"
 #include "brave/components/brave_shields/browser/brave_shields_util.h"
@@ -173,7 +173,7 @@ void EphemeralStorageBrowserTest::SetUpHttpsServer() {
 
   https_server_.RegisterDefaultHandler(
       base::BindRepeating(&HandleFileRequestWithCustomHeaders,
-                          base::SequencedTaskRunnerHandle::Get(),
+                          base::SequencedTaskRunner::GetCurrentDefault(),
                           http_request_monitor_.AsWeakPtr(), test_data_dirs));
   https_server_.AddDefaultHandlers(GetChromeTestDataDir());
   content::SetupCrossSiteRedirector(&https_server_);
@@ -284,7 +284,7 @@ content::EvalJsResult EphemeralStorageBrowserTest::GetCookiesInFrame(
 
 void EphemeralStorageBrowserTest::WaitForCleanupAfterKeepAlive() {
   base::RunLoop run_loop;
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), base::Seconds(kKeepAliveInterval));
   run_loop.Run();
 }
diff --git a/browser/ephemeral_storage/ephemeral_storage_tab_helper.cc b/browser/ephemeral_storage/ephemeral_storage_tab_helper.cc
index 082cb5e139b..57d41c306d9 100644
--- a/browser/ephemeral_storage/ephemeral_storage_tab_helper.cc
+++ b/browser/ephemeral_storage/ephemeral_storage_tab_helper.cc
@@ -12,7 +12,7 @@
 #include "base/feature_list.h"
 #include "base/hash/md5.h"
 #include "base/ranges/ranges.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "chrome/browser/content_settings/cookie_settings_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/content_settings/core/browser/cookie_settings.h"
@@ -139,7 +139,7 @@ void EphemeralStorageTabHelper::CreateEphemeralStorageAreasForDomainAndURL(
     // keep the ephemeral storage alive for some time to handle redirects
     // including meta refresh or other page driven "redirects" that end up back
     // at the original origin
-    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
         FROM_HERE,
         base::BindOnce(
             &EphemeralStorageTabHelper::ClearEphemeralLifetimeKeepalive,
diff --git a/browser/new_tab/new_tab_shows_navigation_throttle.cc b/browser/new_tab/new_tab_shows_navigation_throttle.cc
index 536c7c85d46..bb580c8951e 100644
--- a/browser/new_tab/new_tab_shows_navigation_throttle.cc
+++ b/browser/new_tab/new_tab_shows_navigation_throttle.cc
@@ -8,7 +8,7 @@
 #include <string>
 
 #include "base/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/browser/new_tab/new_tab_shows_options.h"
 #include "brave/browser/profiles/profile_util.h"
 #include "chrome/browser/profiles/profile.h"
@@ -45,7 +45,7 @@ NewTabShowsNavigationThrottle::WillStartRequest() {
   }
 
   new_tab_options_url_ = brave::GetNewTabPageURL(profile);
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&NewTabShowsNavigationThrottle::LoadNewTabOptionsURL,
                      weak_factory_.GetWeakPtr()));
diff --git a/browser/permissions/permission_lifetime_manager_browsertest.cc b/browser/permissions/permission_lifetime_manager_browsertest.cc
index 43c0b34ac23..e1003ebc36d 100644
--- a/browser/permissions/permission_lifetime_manager_browsertest.cc
+++ b/browser/permissions/permission_lifetime_manager_browsertest.cc
@@ -13,9 +13,9 @@
 #include "base/metrics/field_trial.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/test/scoped_mock_time_message_loop_task_runner.h"
 #include "base/test/test_mock_time_task_runner.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "brave/browser/ephemeral_storage/ephemeral_storage_tab_helper.h"
 #include "brave/browser/permissions/mock_permission_lifetime_prompt_factory.h"
@@ -322,7 +322,7 @@ IN_PROC_BROWSER_TEST_F(PermissionLifetimeManagerWithOriginMonitorBrowserTest,
 
   // Permission Should be reset after the timeout
   base::RunLoop run_loop;
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), base::Seconds(kKeepAliveInterval));
   run_loop.Run();
 
@@ -376,7 +376,7 @@ IN_PROC_BROWSER_TEST_F(PermissionLifetimeManagerWithOriginMonitorBrowserTest,
 
   // Permission Should be reset after the timeout
   base::RunLoop run_loop;
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), base::Seconds(kKeepAliveInterval));
   run_loop.Run();
 
@@ -430,7 +430,7 @@ IN_PROC_BROWSER_TEST_F(PermissionLifetimeManagerWithOriginMonitorBrowserTest,
 
   // Permission Should be reset after the timeout
   base::RunLoop run_loop;
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), base::Seconds(kKeepAliveInterval));
   run_loop.Run();
 
diff --git a/browser/tor/brave_tor_browsertest.cc b/browser/tor/brave_tor_browsertest.cc
index ecd79fd4963..c8bdc1fd39d 100644
--- a/browser/tor/brave_tor_browsertest.cc
+++ b/browser/tor/brave_tor_browsertest.cc
@@ -12,9 +12,9 @@
 #include "base/process/process.h"
 #include "base/process/process_iterator.h"
 #include "base/run_loop.h"
+#include "base/task/single_thread_task_runner.h"
 #include "base/test/bind.h"
 #include "base/test/thread_test_helper.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "brave/browser/brave_browser_process.h"
 #include "brave/browser/tor/tor_profile_manager.h"
@@ -97,7 +97,7 @@ bool CheckComponentExists(const std::string& component_id) {
 
 void NonBlockingDelay(const base::TimeDelta& delay) {
   base::RunLoop run_loop(base::RunLoop::Type::kNestableTasksAllowed);
-  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE, run_loop.QuitWhenIdleClosure(), delay);
   run_loop.Run();
 }
diff --git a/browser/ui/views/crash_report_permission_ask_dialog_view.cc b/browser/ui/views/crash_report_permission_ask_dialog_view.cc
index 42f612d0422..a368a96d51e 100644
--- a/browser/ui/views/crash_report_permission_ask_dialog_view.cc
+++ b/browser/ui/views/crash_report_permission_ask_dialog_view.cc
@@ -8,7 +8,7 @@
 #include <utility>
 
 #include "base/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/app/vector_icons/vector_icons.h"
 #include "brave/browser/ui/color/brave_color_id.h"
 #include "brave/components/constants/pref_names.h"
@@ -246,6 +246,6 @@ void CrashReportPermissionAskDialogView::OnWindowClosing() {
 
   // On macOS, this dialog is not destroyed properly when session crashed bubble
   // is launched directly.
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&ScheduleSessionCrashedBubble));
 }
diff --git a/browser/ui/views/sidebar/sidebar_items_scroll_view.cc b/browser/ui/views/sidebar/sidebar_items_scroll_view.cc
index 9b07224cd08..2b67112c3ea 100644
--- a/browser/ui/views/sidebar/sidebar_items_scroll_view.cc
+++ b/browser/ui/views/sidebar/sidebar_items_scroll_view.cc
@@ -8,7 +8,6 @@
 #include <string>
 
 #include "base/bind.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "brave/app/vector_icons/vector_icons.h"
 #include "brave/browser/ui/brave_browser.h"
diff --git a/chromium_src/components/sync_device_info/device_info_sync_bridge.cc b/chromium_src/components/sync_device_info/device_info_sync_bridge.cc
index 46e2684afef..f76c703d8d1 100644
--- a/chromium_src/components/sync_device_info/device_info_sync_bridge.cc
+++ b/chromium_src/components/sync_device_info/device_info_sync_bridge.cc
@@ -35,7 +35,7 @@
 #undef BRAVE_MAKE_LOCAL_DEVICE_SPECIFICS
 
 #include "base/containers/contains.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 
 namespace syncer {
 
@@ -84,7 +84,7 @@ void DeviceInfoSyncBridge::DeleteDeviceInfo(const std::string& client_id,
   DeleteSpecifics(client_id, batch.get());
   batch->GetMetadataChangeList()->ClearMetadata(client_id);
   CommitAndNotify(std::move(batch), /*should_notify=*/true);
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&DeviceInfoSyncBridge::OnDeviceInfoDeleted,
                      weak_ptr_factory_.GetWeakPtr(), client_id, 1,
@@ -98,7 +98,7 @@ void DeviceInfoSyncBridge::OnDeviceInfoDeleted(const std::string& client_id,
   // Make sure the deleted device info is sent
   if (change_processor()->IsEntityUnsynced(client_id) &&
       attempt < kFailedAttemtpsToAckDeviceDelete) {
-    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
         FROM_HERE,
         base::BindOnce(&DeviceInfoSyncBridge::OnDeviceInfoDeleted,
                        weak_ptr_factory_.GetWeakPtr(), client_id, attempt + 1,
diff --git a/chromium_src/components/translate/core/browser/translate_script.cc b/chromium_src/components/translate/core/browser/translate_script.cc
index 3bdf5dc06a8..ac640464c42 100644
--- a/chromium_src/components/translate/core/browser/translate_script.cc
+++ b/chromium_src/components/translate/core/browser/translate_script.cc
@@ -8,7 +8,7 @@
 #include "base/callback.h"
 #include "base/strings/strcat.h"
 #include "base/strings/stringprintf.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/constants/brave_services_key.h"
 #include "brave/components/translate/core/common/brave_translate_constants.h"
 #include "brave/components/translate/core/common/brave_translate_features.h"
@@ -45,7 +45,7 @@ GURL ChromiumTranslateScript::AddHostLocaleToUrl(const GURL& url) {
 
 void TranslateScript::Request(RequestCallback callback, bool is_incognito) {
   if (!IsBraveTranslateGoAvailable()) {
-    base::SequencedTaskRunnerHandle::Get()->PostTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
         FROM_HERE, base::BindOnce(std::move(callback), false));
     return;
   }
diff --git a/components/brave_federated/data_store_service.cc b/components/brave_federated/data_store_service.cc
index dc270b4e918..2d0f61528cf 100644
--- a/components/brave_federated/data_store_service.cc
+++ b/components/brave_federated/data_store_service.cc
@@ -10,7 +10,6 @@
 #include "base/check.h"
 #include "base/task/thread_pool.h"
 #include "base/threading/sequence_bound.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "brave/components/brave_federated/data_stores/async_data_store.h"
 #include "brave/components/brave_federated/notification_ad_task_constants.h"
 
diff --git a/components/brave_federated/data_stores/async_data_store.cc b/components/brave_federated/data_stores/async_data_store.cc
index 519ea08c79e..30dcf7461dd 100644
--- a/components/brave_federated/data_stores/async_data_store.cc
+++ b/components/brave_federated/data_stores/async_data_store.cc
@@ -9,7 +9,6 @@
 
 #include "base/task/sequenced_task_runner.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 
 namespace brave_federated {
 
diff --git a/components/brave_rewards/browser/rewards_service_impl.cc b/components/brave_rewards/browser/rewards_service_impl.cc
index b6267d473b0..fec5f6218cd 100644
--- a/components/brave_rewards/browser/rewards_service_impl.cc
+++ b/components/brave_rewards/browser/rewards_service_impl.cc
@@ -32,9 +32,9 @@
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/task/sequenced_task_runner.h"
+#include "base/task/single_thread_task_runner.h"
 #include "base/task/task_runner_util.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "bat/ledger/global_constants.h"
 #include "bat/ledger/public/ledger_database.h"
@@ -295,7 +295,7 @@ std::vector<std::string> GetISOCountries() {
 
 template <typename Callback, typename... Args>
 void DeferCallback(base::Location location, Callback callback, Args&&... args) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       location,
       base::BindOnce(std::move(callback), std::forward<Args>(args)...));
 }
@@ -379,7 +379,7 @@ RewardsServiceImpl::~RewardsServiceImpl() {
 }
 
 void RewardsServiceImpl::ConnectionClosed() {
-  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&RewardsServiceImpl::StartLedgerProcessIfNecessary,
                      AsWeakPtr()),
diff --git a/components/brave_shields/browser/ad_block_filters_provider_manager.cc b/components/brave_shields/browser/ad_block_filters_provider_manager.cc
index 783da9d19dd..8146aea1800 100644
--- a/components/brave_shields/browser/ad_block_filters_provider_manager.cc
+++ b/components/brave_shields/browser/ad_block_filters_provider_manager.cc
@@ -12,7 +12,7 @@
 #include "base/barrier_callback.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 
 namespace brave_shields {
 
@@ -75,7 +75,7 @@ void AdBlockFiltersProviderManager::LoadDATBuffer(
                      weak_factory_.GetWeakPtr(), std::move(cb)));
   for (auto* provider : filters_providers_) {
     task_tracker_.PostTask(
-        base::SequencedTaskRunnerHandle::Get().get(), FROM_HERE,
+        base::SequencedTaskRunner::GetCurrentDefault().get(), FROM_HERE,
         base::BindOnce(
             &AdBlockFiltersProvider::LoadDAT, provider->AsWeakPtr(),
             base::BindOnce(OnDATLoaded, std::move(collect_and_merge))));
diff --git a/components/brave_shields/browser/ad_block_subscription_download_client.cc b/components/brave_shields/browser/ad_block_subscription_download_client.cc
index 71ab306f667..a08a6924f00 100644
--- a/components/brave_shields/browser/ad_block_subscription_download_client.cc
+++ b/components/brave_shields/browser/ad_block_subscription_download_client.cc
@@ -14,7 +14,7 @@
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros_local.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/brave_shields/browser/ad_block_service.h"
 #include "brave/components/brave_shields/browser/ad_block_subscription_download_manager.h"
 #include "brave/components/brave_shields/browser/ad_block_subscription_service_manager.h"
@@ -114,7 +114,7 @@ bool AdBlockSubscriptionDownloadClient::CanServiceRemoveDownloadedFile(
 void AdBlockSubscriptionDownloadClient::GetUploadData(
     const std::string& guid,
     download::GetUploadDataCallback callback) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(std::move(callback), nullptr));
 }
 
diff --git a/components/brave_vpn/browser/connection/brave_vpn_os_connection_api_sim.cc b/components/brave_vpn/browser/connection/brave_vpn_os_connection_api_sim.cc
index 42ef83693d0..afac7b5499b 100644
--- a/components/brave_vpn/browser/connection/brave_vpn_os_connection_api_sim.cc
+++ b/components/brave_vpn/browser/connection/brave_vpn_os_connection_api_sim.cc
@@ -10,7 +10,7 @@
 #include "base/logging.h"
 #include "base/notreached.h"
 #include "base/rand_util.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/time/time.h"
 #include "brave/components/brave_vpn/browser/connection/brave_vpn_os_connection_api.h"
 
@@ -25,7 +25,7 @@ BraveVPNOSConnectionAPISim::~BraveVPNOSConnectionAPISim() = default;
 
 void BraveVPNOSConnectionAPISim::CreateVPNConnectionImpl(
     const BraveVPNConnectionInfo& info) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&BraveVPNOSConnectionAPISim::OnCreated,
                      weak_factory_.GetWeakPtr(), info.connection_name(), true));
@@ -42,11 +42,11 @@ void BraveVPNOSConnectionAPISim::ConnectImpl(const std::string& name) {
   const bool success = base::RandInt(0, 9) > 3;
   // Simulate connection success
   if (success) {
-    base::SequencedTaskRunnerHandle::Get()->PostTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
         FROM_HERE, base::BindOnce(&BraveVPNOSConnectionAPISim::OnIsConnecting,
                                   weak_factory_.GetWeakPtr(), name));
 
-    base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
         FROM_HERE,
         base::BindOnce(&BraveVPNOSConnectionAPISim::OnConnected,
                        weak_factory_.GetWeakPtr(), name, true),
@@ -55,10 +55,10 @@ void BraveVPNOSConnectionAPISim::ConnectImpl(const std::string& name) {
   }
 
   // Simulate connection failure
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&BraveVPNOSConnectionAPISim::OnIsConnecting,
                                 weak_factory_.GetWeakPtr(), name));
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&BraveVPNOSConnectionAPISim::OnConnected,
                      weak_factory_.GetWeakPtr(), name, false),
@@ -68,11 +68,11 @@ void BraveVPNOSConnectionAPISim::ConnectImpl(const std::string& name) {
 void BraveVPNOSConnectionAPISim::DisconnectImpl(const std::string& name) {
   disconnect_requested_ = true;
 
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&BraveVPNOSConnectionAPISim::OnIsDisconnecting,
                                 weak_factory_.GetWeakPtr(), name));
 
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&BraveVPNOSConnectionAPISim::OnDisconnected,
                                 weak_factory_.GetWeakPtr(), name, true));
 }
@@ -87,7 +87,7 @@ void BraveVPNOSConnectionAPISim::Connect() {
 
 void BraveVPNOSConnectionAPISim::RemoveVPNConnectionImpl(
     const std::string& name) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&BraveVPNOSConnectionAPISim::OnRemoved,
                                 weak_factory_.GetWeakPtr(), name, true));
 }
diff --git a/components/brave_wayback_machine/brave_wayback_machine_tab_helper.cc b/components/brave_wayback_machine/brave_wayback_machine_tab_helper.cc
index f71fbc22457..e7ab63419b3 100644
--- a/components/brave_wayback_machine/brave_wayback_machine_tab_helper.cc
+++ b/components/brave_wayback_machine/brave_wayback_machine_tab_helper.cc
@@ -10,7 +10,7 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/flat_set.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/brave_wayback_machine/brave_wayback_machine_delegate.h"
 #include "brave/components/brave_wayback_machine/brave_wayback_machine_utils.h"
 #include "brave/components/brave_wayback_machine/pref_names.h"
@@ -58,7 +58,7 @@ void BraveWaybackMachineTabHelper::DidFinishNavigation(
       return;
 
     // Create infobar in the next loop for not blocking navigation.
-    base::SequencedTaskRunnerHandle::Get()->PostTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
         FROM_HERE, base::BindOnce(&BraveWaybackMachineTabHelper::CreateInfoBar,
                                   weak_factory_.GetWeakPtr()));
   }
diff --git a/components/child_process_monitor/child_process_monitor.cc b/components/child_process_monitor/child_process_monitor.cc
index 3a6eec6f7b5..8403e1f2bc2 100644
--- a/components/child_process_monitor/child_process_monitor.cc
+++ b/components/child_process_monitor/child_process_monitor.cc
@@ -24,10 +24,10 @@
 #include "base/logging.h"
 #include "base/process/kill.h"
 #include "base/task/bind_post_task.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/task/single_thread_task_runner.h"
 #include "base/task/task_traits.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "build/build_config.h"
 
 namespace brave {
@@ -196,7 +196,7 @@ void ChildProcessMonitor::Start(
       FROM_HERE,
       base::BindOnce(
           &MonitorChild, child_process_.Handle(),
-          base::BindPostTask(base::SequencedTaskRunnerHandle::Get(),
+          base::BindPostTask(base::SequencedTaskRunner::GetCurrentDefault(),
                              base::BindOnce(&ChildProcessMonitor::OnChildCrash,
                                             weak_ptr_factory_.GetWeakPtr(),
                                             std::move(callback)))));
diff --git a/components/child_process_monitor/child_process_monitor_unittest.cc b/components/child_process_monitor/child_process_monitor_unittest.cc
index 4f7c4526029..b688bef87d2 100644
--- a/components/child_process_monitor/child_process_monitor_unittest.cc
+++ b/components/child_process_monitor/child_process_monitor_unittest.cc
@@ -13,12 +13,12 @@
 
 #include "base/process/kill.h"
 #include "base/run_loop.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/test/bind.h"
 #include "base/test/multiprocess_test.h"
 #include "base/test/task_environment.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/multiprocess_func_list.h"
@@ -38,7 +38,7 @@ void WaitForChildTermination(base::ProcessHandle handle) {
 class ChildProcessMonitorTest : public base::MultiProcessTest {
  protected:
   void SetUp() override {
-    callback_runner_ = base::SequencedTaskRunnerHandle::Get();
+    callback_runner_ = base::SequencedTaskRunner::GetCurrentDefault();
   }
 
   base::test::TaskEnvironment task_environment_;
diff --git a/components/content_settings/core/browser/brave_content_settings_pref_provider.cc b/components/content_settings/core/browser/brave_content_settings_pref_provider.cc
index eea977f3395..46968bf0e16 100644
--- a/components/content_settings/core/browser/brave_content_settings_pref_provider.cc
+++ b/components/content_settings/core/browser/brave_content_settings_pref_provider.cc
@@ -16,7 +16,7 @@
 #include "base/ranges/algorithm.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/task/bind_post_task.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/brave_shields/common/brave_shield_constants.h"
 #include "brave/components/constants/pref_names.h"
 #include "brave/components/content_settings/core/browser/brave_content_settings_utils.h"
@@ -187,7 +187,7 @@ void BravePrefProvider::MigrateShieldsSettings(bool incognito) {
       pref_change_registrar_.Add(
           info->website_settings_info()->pref_name(),
           base::BindPostTask(
-              base::SequencedTaskRunnerHandle::Get(),
+              base::SequencedTaskRunner::GetCurrentDefault(),
               base::BindRepeating(&BravePrefProvider::EnsureNoWildcardEntries,
                                   weak_factory_.GetWeakPtr(), content_type)));
     }
diff --git a/components/debounce/browser/debounce_navigation_throttle.cc b/components/debounce/browser/debounce_navigation_throttle.cc
index c1d0318a841..9b6de186b84 100644
--- a/components/debounce/browser/debounce_navigation_throttle.cc
+++ b/components/debounce/browser/debounce_navigation_throttle.cc
@@ -13,7 +13,7 @@
 #include "base/bind.h"
 #include "base/containers/contains.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/debounce/browser/debounce_service.h"
 #include "brave/components/debounce/common/pref_names.h"
 #include "components/user_prefs/user_prefs.h"
@@ -152,7 +152,7 @@ DebounceNavigationThrottle::MaybeRedirect() {
   // technically this is a new navigation
   params.redirect_chain.clear();
 
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(
                      [](base::WeakPtr<content::WebContents> web_contents,
                         const content::OpenURLParams& params) {
diff --git a/components/decentralized_dns/content/decentralized_dns_navigation_throttle.cc b/components/decentralized_dns/content/decentralized_dns_navigation_throttle.cc
index c1e9fad52a7..e15078aa716 100644
--- a/components/decentralized_dns/content/decentralized_dns_navigation_throttle.cc
+++ b/components/decentralized_dns/content/decentralized_dns_navigation_throttle.cc
@@ -9,7 +9,7 @@
 
 #include "base/bind.h"
 #include "base/features.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/brave_wallet/common/features.h"
 #include "brave/components/decentralized_dns/content/decentralized_dns_interstitial_controller_client.h"
 #include "brave/components/decentralized_dns/content/decentralized_dns_opt_in_page.h"
@@ -65,7 +65,7 @@ DecentralizedDnsNavigationThrottle::WillStartRequest() {
       (base::FeatureList::IsEnabled(
            brave_wallet::features::kBraveWalletSnsFeature) &&
        IsSnsTLD(url.host_piece()) && IsSnsResolveMethodAsk(local_state_))) {
-    base::SequencedTaskRunnerHandle::Get()->PostTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
         FROM_HERE,
         base::BindOnce(&DecentralizedDnsNavigationThrottle::ShowInterstitial,
                        weak_ptr_factory_.GetWeakPtr()));
@@ -80,7 +80,7 @@ DecentralizedDnsNavigationThrottle::WillFailRequest() {
   auto* handle = navigation_handle();
   if (handle &&
       handle->GetNetErrorCode() == net::ERR_ENS_OFFCHAIN_LOOKUP_NOT_SELECTED) {
-    base::SequencedTaskRunnerHandle::Get()->PostTask(
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
         FROM_HERE, base::BindOnce(&DecentralizedDnsNavigationThrottle::
                                       ShowEnsOffchainLookupInterstitial,
                                   weak_ptr_factory_.GetWeakPtr()));
diff --git a/components/ephemeral_storage/ephemeral_storage_service.cc b/components/ephemeral_storage/ephemeral_storage_service.cc
index ccb6e9b9c11..6eec38cb6e0 100644
--- a/components/ephemeral_storage/ephemeral_storage_service.cc
+++ b/components/ephemeral_storage/ephemeral_storage_service.cc
@@ -7,7 +7,7 @@
 
 #include <utility>
 
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/ephemeral_storage/url_storage_checker.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "content/public/browser/browser_context.h"
@@ -46,7 +46,7 @@ void EphemeralStorageService::CanEnable1PESForUrl(
 
   auto site_instance = content::SiteInstance::CreateForURL(context_, url);
   auto* storage_partition = context_->GetStoragePartition(site_instance.get());
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&UrlStorageChecker::StartCheck,
                      base::MakeRefCounted<UrlStorageChecker>(
diff --git a/components/greaselion/browser/greaselion_download_service.cc b/components/greaselion/browser/greaselion_download_service.cc
index e3dfd5c89a8..ba94e9d9b7b 100644
--- a/components/greaselion/browser/greaselion_download_service.cc
+++ b/components/greaselion/browser/greaselion_download_service.cc
@@ -17,9 +17,9 @@
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/task/task_runner_util.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/version.h"
 #include "brave/components/brave_component_updater/browser/dat_file_util.h"
 #include "brave/components/brave_component_updater/browser/local_data_files_service.h"
@@ -217,7 +217,7 @@ GreaselionDownloadService::GreaselionDownloadService(
               main_sequence->PostTask(FROM_HERE,
                                       base::BindOnce(callback, error));
             },
-            base::SequencedTaskRunnerHandle::Get(),
+            base::SequencedTaskRunner::GetCurrentDefault(),
             base::BindRepeating(
                 &GreaselionDownloadService::OnDevModeLocalFileChanged,
                 weak_factory_.GetWeakPtr()));
diff --git a/components/permissions/permission_lifetime_manager.cc b/components/permissions/permission_lifetime_manager.cc
index 544fa46d5fd..41d3b046ace 100644
--- a/components/permissions/permission_lifetime_manager.cc
+++ b/components/permissions/permission_lifetime_manager.cc
@@ -11,7 +11,7 @@
 #include "base/auto_reset.h"
 #include "base/containers/contains.h"
 #include "base/logging.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/permissions/permission_lifetime_pref_names.h"
 #include "components/content_settings/core/browser/content_settings_registry.h"
 #include "components/content_settings/core/browser/content_settings_utils.h"
@@ -113,7 +113,7 @@ void PermissionLifetimeManager::PermissionDecided(
       // There is no any active origin with this key, so reset the permission
       // right away. PostTask is required because at this point the permission
       // is not stored in HostContentSettingsMap yet.
-      base::SequencedTaskRunnerHandle::Get()->PostTask(
+      base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
           FROM_HERE,
           base::BindOnce(&PermissionLifetimeManager::ResetPermission,
                          weak_ptr_factory_.GetWeakPtr(), content_type,
diff --git a/components/playlist/browser/playlist_media_file_download_manager.cc b/components/playlist/browser/playlist_media_file_download_manager.cc
index cc4e712f50d..7a5d97ab15a 100644
--- a/components/playlist/browser/playlist_media_file_download_manager.cc
+++ b/components/playlist/browser/playlist_media_file_download_manager.cc
@@ -9,7 +9,7 @@
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/values.h"
 #include "brave/components/playlist/browser/playlist_constants.h"
 
@@ -121,7 +121,7 @@ void PlaylistMediaFileDownloadManager::OnMediaFileReady(
 
   current_item_.reset();
 
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&PlaylistMediaFileDownloadManager::TryStartingDownloadTask,
                      weak_factory_.GetWeakPtr()));
@@ -135,7 +135,7 @@ void PlaylistMediaFileDownloadManager::OnMediaFileGenerationFailed(
 
   CancelCurrentDownloadingPlaylistItem();
 
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE,
       base::BindOnce(&PlaylistMediaFileDownloadManager::TryStartingDownloadTask,
                      weak_factory_.GetWeakPtr()));
diff --git a/components/skus/browser/skus_context_impl.cc b/components/skus/browser/skus_context_impl.cc
index e0604ee5f8d..033a41ee179 100644
--- a/components/skus/browser/skus_context_impl.cc
+++ b/components/skus/browser/skus_context_impl.cc
@@ -9,7 +9,7 @@
 #include <utility>
 
 #include "base/logging.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/skus/browser/pref_names.h"
 #include "brave/components/skus/browser/rs/cxx/src/lib.rs.h"
 #include "brave/components/skus/browser/skus_url_loader_impl.h"
@@ -100,7 +100,7 @@ void shim_scheduleWakeup(
   int buffer_ms = 10;
   VLOG(1) << "shim_scheduleWakeup " << (delay_ms + buffer_ms) << " ("
           << delay_ms << "ms plus " << buffer_ms << "ms buffer)";
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&OnScheduleWakeup, std::move(done), std::move(ctx)),
       base::Milliseconds(delay_ms + buffer_ms));
diff --git a/components/skus/browser/skus_service_impl.cc b/components/skus/browser/skus_service_impl.cc
index 4d930249ea0..bdd4afedf89 100644
--- a/components/skus/browser/skus_service_impl.cc
+++ b/components/skus/browser/skus_service_impl.cc
@@ -9,7 +9,6 @@
 #include <utility>
 
 #include "base/json/json_reader.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "brave/components/skus/browser/pref_names.h"
 #include "brave/components/skus/browser/rs/cxx/src/lib.rs.h"
 #include "brave/components/skus/browser/skus_context_impl.h"
diff --git a/components/speedreader/speedreader_rewriter_service.cc b/components/speedreader/speedreader_rewriter_service.cc
index 9ebfc11fb85..d8d110685cb 100644
--- a/components/speedreader/speedreader_rewriter_service.cc
+++ b/components/speedreader/speedreader_rewriter_service.cc
@@ -18,9 +18,9 @@
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/task/bind_post_task.h"
+#include "base/task/sequenced_task_runner.h"
 #include "base/task/task_runner_util.h"
 #include "base/task/thread_pool.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "brave/components/speedreader/common/features.h"
 #include "brave/components/speedreader/common/url_readable_hints.h"
 #include "brave/components/speedreader/rust/ffi/speedreader.h"
@@ -121,7 +121,7 @@ SpeedreaderRewriterService::SpeedreaderRewriterService()
         base::BindOnce(
             &CreateAndStartFilePathWatcher, stylesheet_override_path_,
             base::BindPostTask(
-                base::SequencedTaskRunnerHandle::Get(),
+                base::SequencedTaskRunner::GetCurrentDefault(),
                 base::BindRepeating(&SpeedreaderRewriterService::OnFileChanged,
                                     weak_factory_.GetWeakPtr()))),
         base::BindOnce(&SpeedreaderRewriterService::OnWatcherStarted,
diff --git a/components/tor/tor_control.cc b/components/tor/tor_control.cc
index 8cd42477963..d271ebdd766 100644
--- a/components/tor/tor_control.cc
+++ b/components/tor/tor_control.cc
@@ -17,7 +17,6 @@
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/task/sequenced_task_runner.h"
-#include "base/threading/sequenced_task_runner_handle.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/socket/tcp_client_socket.h"
@@ -88,7 +87,7 @@ static std::string escapify(const char* buf, int len) {
 TorControl::TorControl(base::WeakPtr<TorControl::Delegate> delegate,
                        scoped_refptr<base::SequencedTaskRunner> task_runner)
     : running_(false),
-      owner_task_runner_(base::SequencedTaskRunnerHandle::Get()),
+      owner_task_runner_(base::SequencedTaskRunner::GetCurrentDefault()),
       io_task_runner_(task_runner),
       writing_(false),
       reading_(false),
diff --git a/components/tor/tor_launcher_factory.cc b/components/tor/tor_launcher_factory.cc
index 3087916d97b..7e606ef5b97 100644
--- a/components/tor/tor_launcher_factory.cc
+++ b/components/tor/tor_launcher_factory.cc
@@ -11,7 +11,7 @@
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/task/bind_post_task.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "brave/components/tor/tor_file_watcher.h"
 #include "brave/components/tor/tor_launcher_observer.h"
 #include "brave/components/tor/tor_utils.h"
@@ -219,7 +219,7 @@ void TorLauncherFactory::OnTorLaunched(bool result, int64_t pid) {
   tor::TorFileWatcher* tor_file_watcher =
       new tor::TorFileWatcher(config_.tor_watch_path);
   tor_file_watcher->StartWatching(base::BindPostTask(
-      base::SequencedTaskRunnerHandle::Get(),
+      base::SequencedTaskRunner::GetCurrentDefault(),
       base::BindOnce(&TorLauncherFactory::OnTorControlPrerequisitesReady,
                      weak_ptr_factory_.GetWeakPtr(), pid)));
 }
@@ -228,11 +228,11 @@ void TorLauncherFactory::OnTorControlReady() {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   VLOG(2) << "TOR CONTROL: Ready!";
   control_->GetVersion(
-      base::BindPostTask(base::SequencedTaskRunnerHandle::Get(),
+      base::BindPostTask(base::SequencedTaskRunner::GetCurrentDefault(),
                          base::BindOnce(&TorLauncherFactory::GotVersion,
                                         weak_ptr_factory_.GetWeakPtr())));
   control_->GetSOCKSListeners(
-      base::BindPostTask(base::SequencedTaskRunnerHandle::Get(),
+      base::BindPostTask(base::SequencedTaskRunner::GetCurrentDefault(),
                          base::BindOnce(&TorLauncherFactory::GotSOCKSListeners,
                                         weak_ptr_factory_.GetWeakPtr())));
   // A Circuit might have been established when Tor control is ready, in that
@@ -240,7 +240,7 @@ void TorLauncherFactory::OnTorControlReady() {
   // directly as fail safe, otherwise Tor window might stuck in disconnected
   // state while Tor circuit is ready.
   control_->GetCircuitEstablished(base::BindPostTask(
-      base::SequencedTaskRunnerHandle::Get(),
+      base::SequencedTaskRunner::GetCurrentDefault(),
       base::BindOnce(&TorLauncherFactory::GotCircuitEstablished,
                      weak_ptr_factory_.GetWeakPtr())));
   control_->Subscribe(tor::TorControlEvent::NETWORK_LIVENESS,
@@ -311,7 +311,7 @@ void TorLauncherFactory::OnTorControlClosed(bool was_running) {
     tor::TorFileWatcher* tor_file_watcher =
         new tor::TorFileWatcher(config_.tor_watch_path);
     tor_file_watcher->StartWatching(base::BindPostTask(
-        base::SequencedTaskRunnerHandle::Get(),
+        base::SequencedTaskRunner::GetCurrentDefault(),
         base::BindOnce(&TorLauncherFactory::OnTorControlPrerequisitesReady,
                        weak_ptr_factory_.GetWeakPtr(), tor_pid_)));
   }
@@ -333,7 +333,7 @@ void TorLauncherFactory::OnTorControlPrerequisitesReady(
     tor::TorFileWatcher* tor_file_watcher =
         new tor::TorFileWatcher(config_.tor_watch_path);
     tor_file_watcher->StartWatching(base::BindPostTask(
-        base::SequencedTaskRunnerHandle::Get(),
+        base::SequencedTaskRunner::GetCurrentDefault(),
         base::BindOnce(&TorLauncherFactory::OnTorControlPrerequisitesReady,
                        weak_ptr_factory_.GetWeakPtr(), pid)));
   }
@@ -351,7 +351,7 @@ void TorLauncherFactory::DelayedRelaunchTor() {
   is_connected_ = false;
   KillTorProcess();
   // Post delayed relaunch for control to stop
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&TorLauncherFactory::RelaunchTor,
                      weak_ptr_factory_.GetWeakPtr()),
diff --git a/components/tor/tor_tab_helper.cc b/components/tor/tor_tab_helper.cc
index 846afe52637..951dd73e478 100644
--- a/components/tor/tor_tab_helper.cc
+++ b/components/tor/tor_tab_helper.cc
@@ -5,7 +5,7 @@
 
 #include "brave/components/tor/tor_tab_helper.h"
 
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "content/public/browser/navigation_handle.h"
 
 namespace tor {
@@ -31,7 +31,7 @@ void TorTabHelper::DidFinishNavigation(
   // new connection or some fatal errors within tor process
   if (navigation_handle->GetNetErrorCode() != net::ERR_PROXY_CONNECTION_FAILED)
     return;
-  base::SequencedTaskRunnerHandle::Get()->PostDelayedTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
       FROM_HERE,
       base::BindOnce(&TorTabHelper::ReloadTab, AsWeakPtr(),
                      navigation_handle->GetWebContents()),
diff --git a/vendor/bat-native-ledger/src/bat/ledger/internal/core/test_ledger_client.cc b/vendor/bat-native-ledger/src/bat/ledger/internal/core/test_ledger_client.cc
index 599b7a68d5b..c728963b0f1 100644
--- a/vendor/bat-native-ledger/src/bat/ledger/internal/core/test_ledger_client.cc
+++ b/vendor/bat-native-ledger/src/bat/ledger/internal/core/test_ledger_client.cc
@@ -17,7 +17,7 @@
 #include "base/strings/escape.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "net/http/http_status_code.h"
 
 namespace ledger {
@@ -111,7 +111,7 @@ std::string TestLedgerClient::URIEncode(const std::string& value) {
 void TestLedgerClient::LoadURL(mojom::UrlRequestPtr request,
                                client::LoadURLCallback callback) {
   DCHECK(request);
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&TestLedgerClient::LoadURLAfterDelay,
                                 weak_factory_.GetWeakPtr(), std::move(request),
                                 std::move(callback)));
@@ -291,7 +291,7 @@ void TestLedgerClient::ReconcileStampReset() {}
 void TestLedgerClient::RunDBTransaction(
     mojom::DBTransactionPtr transaction,
     client::RunDBTransactionCallback callback) {
-  base::SequencedTaskRunnerHandle::Get()->PostTask(
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
       FROM_HERE, base::BindOnce(&TestLedgerClient::RunDBTransactionAfterDelay,
                                 weak_factory_.GetWeakPtr(),
                                 std::move(transaction), std::move(callback)));
diff --git a/vendor/bat-native-ledger/src/bat/ledger/internal/endpoints/request_for.h b/vendor/bat-native-ledger/src/bat/ledger/internal/endpoints/request_for.h
index 5878258033d..0ebe47c6a1d 100644
--- a/vendor/bat-native-ledger/src/bat/ledger/internal/endpoints/request_for.h
+++ b/vendor/bat-native-ledger/src/bat/ledger/internal/endpoints/request_for.h
@@ -10,7 +10,7 @@
 #include <utility>
 
 #include "base/callback.h"
-#include "base/threading/sequenced_task_runner_handle.h"
+#include "base/task/sequenced_task_runner.h"
 #include "bat/ledger/internal/endpoints/request_builder.h"
 #include "bat/ledger/internal/ledger_impl.h"
 #include "bat/ledger/internal/logging/logging.h"
@@ -52,7 +52,7 @@ class RequestFor {
                     "Please make sure the error type of your endpoint has the "
                     "kFailedToCreateRequest enumerator!");
 
-      base::SequencedTaskRunnerHandle::Get()->PostTask(
+      base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
           FROM_HERE,
           base::BindOnce(
               std::move(callback),