diff --git a/shell/browser/badging/badge_manager_factory.cc b/shell/browser/badging/badge_manager_factory.cc
index 7f5047cf7d81..71216a0aca97 100644
--- a/shell/browser/badging/badge_manager_factory.cc
+++ b/shell/browser/badging/badge_manager_factory.cc
@@ -31,9 +31,10 @@ BadgeManagerFactory::BadgeManagerFactory()
 
 BadgeManagerFactory::~BadgeManagerFactory() = default;
 
-KeyedService* BadgeManagerFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+BadgeManagerFactory::BuildServiceInstanceForBrowserContext(
     content::BrowserContext* context) const {
-  return new BadgeManager();
+  return std::make_unique<BadgeManager>();
 }
 
 }  // namespace badging
diff --git a/shell/browser/badging/badge_manager_factory.h b/shell/browser/badging/badge_manager_factory.h
index a104bc1c2a7f..3ce918a74915 100644
--- a/shell/browser/badging/badge_manager_factory.h
+++ b/shell/browser/badging/badge_manager_factory.h
@@ -36,7 +36,7 @@ class BadgeManagerFactory : public BrowserContextKeyedServiceFactory {
   ~BadgeManagerFactory() override;
 
   // BrowserContextKeyedServiceFactory
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* context) const override;
 };
 
diff --git a/shell/browser/extensions/electron_extension_system_factory.cc b/shell/browser/extensions/electron_extension_system_factory.cc
index 72074ec33122..55a654eec8b5 100644
--- a/shell/browser/extensions/electron_extension_system_factory.cc
+++ b/shell/browser/extensions/electron_extension_system_factory.cc
@@ -35,9 +35,10 @@ ElectronExtensionSystemFactory::ElectronExtensionSystemFactory()
 
 ElectronExtensionSystemFactory::~ElectronExtensionSystemFactory() = default;
 
-KeyedService* ElectronExtensionSystemFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+ElectronExtensionSystemFactory::BuildServiceInstanceForBrowserContext(
     BrowserContext* context) const {
-  return new ElectronExtensionSystem(context);
+  return std::make_unique<ElectronExtensionSystem>(context);
 }
 
 BrowserContext* ElectronExtensionSystemFactory::GetBrowserContextToUse(
diff --git a/shell/browser/extensions/electron_extension_system_factory.h b/shell/browser/extensions/electron_extension_system_factory.h
index 449e49f3dd69..f2200dd2f393 100644
--- a/shell/browser/extensions/electron_extension_system_factory.h
+++ b/shell/browser/extensions/electron_extension_system_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_EXTENSIONS_ELECTRON_EXTENSION_SYSTEM_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_EXTENSIONS_ELECTRON_EXTENSION_SYSTEM_FACTORY_H_
 
+#include <memory>
+
 #include "extensions/browser/extension_system_provider.h"
 
 namespace base {
@@ -36,7 +38,7 @@ class ElectronExtensionSystemFactory : public ExtensionSystemProvider {
   ~ElectronExtensionSystemFactory() override;
 
   // BrowserContextKeyedServiceFactory implementation:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* context) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
diff --git a/shell/browser/file_system_access/file_system_access_permission_context_factory.cc b/shell/browser/file_system_access/file_system_access_permission_context_factory.cc
index ff553fc2dc59..4f01b1cb65b4 100644
--- a/shell/browser/file_system_access/file_system_access_permission_context_factory.cc
+++ b/shell/browser/file_system_access/file_system_access_permission_context_factory.cc
@@ -36,15 +36,9 @@ FileSystemAccessPermissionContextFactory::
 FileSystemAccessPermissionContextFactory::
     ~FileSystemAccessPermissionContextFactory() = default;
 
-// static
-KeyedService* FileSystemAccessPermissionContextFactory::BuildServiceInstanceFor(
-    content::BrowserContext* context) const {
-  return BuildInstanceFor(context).release();
-}
-
 std::unique_ptr<KeyedService>
-FileSystemAccessPermissionContextFactory::BuildInstanceFor(
-    content::BrowserContext* context) {
+FileSystemAccessPermissionContextFactory::BuildServiceInstanceForBrowserContext(
+    content::BrowserContext* context) const {
   return std::make_unique<FileSystemAccessPermissionContext>(context);
 }
 
diff --git a/shell/browser/file_system_access/file_system_access_permission_context_factory.h b/shell/browser/file_system_access/file_system_access_permission_context_factory.h
index b08fe99d02fe..62256aa742ed 100644
--- a/shell/browser/file_system_access/file_system_access_permission_context_factory.h
+++ b/shell/browser/file_system_access/file_system_access_permission_context_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_PERMISSION_CONTEXT_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_PERMISSION_CONTEXT_FACTORY_H_
 
+#include <memory>
+
 #include "base/no_destructor.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 #include "shell/browser/file_system_access/file_system_access_permission_context.h"
@@ -18,9 +20,6 @@ class FileSystemAccessPermissionContextFactory
       content::BrowserContext* context);
   static FileSystemAccessPermissionContextFactory* GetInstance();
 
-  static std::unique_ptr<KeyedService> BuildInstanceFor(
-      content::BrowserContext* context);
-
   FileSystemAccessPermissionContextFactory(
       const FileSystemAccessPermissionContextFactory&) = delete;
   FileSystemAccessPermissionContextFactory& operator=(
@@ -33,7 +32,7 @@ class FileSystemAccessPermissionContextFactory
   ~FileSystemAccessPermissionContextFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* context) const override;
 };
 
diff --git a/shell/browser/hid/hid_chooser_context_factory.cc b/shell/browser/hid/hid_chooser_context_factory.cc
index 74982208ca88..ab556210003f 100644
--- a/shell/browser/hid/hid_chooser_context_factory.cc
+++ b/shell/browser/hid/hid_chooser_context_factory.cc
@@ -37,11 +37,11 @@ HidChooserContextFactory::HidChooserContextFactory()
 
 HidChooserContextFactory::~HidChooserContextFactory() = default;
 
-KeyedService* HidChooserContextFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+HidChooserContextFactory::BuildServiceInstanceForBrowserContext(
     content::BrowserContext* context) const {
-  auto* browser_context =
-      static_cast<electron::ElectronBrowserContext*>(context);
-  return new HidChooserContext(browser_context);
+  return std::make_unique<HidChooserContext>(
+      static_cast<electron::ElectronBrowserContext*>(context));
 }
 
 content::BrowserContext* HidChooserContextFactory::GetBrowserContextToUse(
diff --git a/shell/browser/hid/hid_chooser_context_factory.h b/shell/browser/hid/hid_chooser_context_factory.h
index 26ea0d0e67d5..3a2ae99c1bfc 100644
--- a/shell/browser/hid/hid_chooser_context_factory.h
+++ b/shell/browser/hid/hid_chooser_context_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_HID_HID_CHOOSER_CONTEXT_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_HID_HID_CHOOSER_CONTEXT_FACTORY_H_
 
+#include <memory>
+
 #include "base/no_destructor.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
@@ -31,7 +33,7 @@ class HidChooserContextFactory : public BrowserContextKeyedServiceFactory {
   ~HidChooserContextFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* profile) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
diff --git a/shell/browser/net/network_context_service_factory.cc b/shell/browser/net/network_context_service_factory.cc
index b74c5671b9bb..ecfd842d5d0a 100644
--- a/shell/browser/net/network_context_service_factory.cc
+++ b/shell/browser/net/network_context_service_factory.cc
@@ -29,9 +29,10 @@ NetworkContextServiceFactory::NetworkContextServiceFactory()
 
 NetworkContextServiceFactory::~NetworkContextServiceFactory() = default;
 
-KeyedService* NetworkContextServiceFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+NetworkContextServiceFactory::BuildServiceInstanceForBrowserContext(
     content::BrowserContext* context) const {
-  return new NetworkContextService(
+  return std::make_unique<NetworkContextService>(
       static_cast<ElectronBrowserContext*>(context));
 }
 
diff --git a/shell/browser/net/network_context_service_factory.h b/shell/browser/net/network_context_service_factory.h
index 5f997f37b20b..da723b80b3ad 100644
--- a/shell/browser/net/network_context_service_factory.h
+++ b/shell/browser/net/network_context_service_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_NET_NETWORK_CONTEXT_SERVICE_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_NET_NETWORK_CONTEXT_SERVICE_FACTORY_H_
 
+#include <memory>
+
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 class KeyedService;
@@ -43,7 +45,7 @@ class NetworkContextServiceFactory : public BrowserContextKeyedServiceFactory {
   ~NetworkContextServiceFactory() override;
 
   // BrowserContextKeyedServiceFactory implementation:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* context) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
diff --git a/shell/browser/serial/serial_chooser_context_factory.cc b/shell/browser/serial/serial_chooser_context_factory.cc
index 5524af7d94a2..25e01287a6e4 100644
--- a/shell/browser/serial/serial_chooser_context_factory.cc
+++ b/shell/browser/serial/serial_chooser_context_factory.cc
@@ -18,11 +18,11 @@ SerialChooserContextFactory::SerialChooserContextFactory()
 
 SerialChooserContextFactory::~SerialChooserContextFactory() = default;
 
-KeyedService* SerialChooserContextFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+SerialChooserContextFactory::BuildServiceInstanceForBrowserContext(
     content::BrowserContext* context) const {
-  auto* browser_context =
-      static_cast<electron::ElectronBrowserContext*>(context);
-  return new SerialChooserContext(browser_context);
+  return std::make_unique<SerialChooserContext>(
+      static_cast<electron::ElectronBrowserContext*>(context));
 }
 
 // static
diff --git a/shell/browser/serial/serial_chooser_context_factory.h b/shell/browser/serial/serial_chooser_context_factory.h
index 9e73c428952b..f738de85401c 100644
--- a/shell/browser/serial/serial_chooser_context_factory.h
+++ b/shell/browser/serial/serial_chooser_context_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_SERIAL_SERIAL_CHOOSER_CONTEXT_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_SERIAL_SERIAL_CHOOSER_CONTEXT_FACTORY_H_
 
+#include <memory>
+
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 #include "shell/browser/serial/serial_chooser_context.h"
 
@@ -35,7 +37,7 @@ class SerialChooserContextFactory : public BrowserContextKeyedServiceFactory {
       delete;
 
   // BrowserContextKeyedServiceFactory methods:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* context) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
diff --git a/shell/browser/usb/usb_chooser_context_factory.cc b/shell/browser/usb/usb_chooser_context_factory.cc
index acbd8949dfac..5b8ae2d7d218 100644
--- a/shell/browser/usb/usb_chooser_context_factory.cc
+++ b/shell/browser/usb/usb_chooser_context_factory.cc
@@ -18,11 +18,11 @@ UsbChooserContextFactory::UsbChooserContextFactory()
 
 UsbChooserContextFactory::~UsbChooserContextFactory() = default;
 
-KeyedService* UsbChooserContextFactory::BuildServiceInstanceFor(
+std::unique_ptr<KeyedService>
+UsbChooserContextFactory::BuildServiceInstanceForBrowserContext(
     content::BrowserContext* context) const {
-  auto* browser_context =
-      static_cast<electron::ElectronBrowserContext*>(context);
-  return new UsbChooserContext(browser_context);
+  return std::make_unique<UsbChooserContext>(
+      static_cast<electron::ElectronBrowserContext*>(context));
 }
 
 // static
diff --git a/shell/browser/usb/usb_chooser_context_factory.h b/shell/browser/usb/usb_chooser_context_factory.h
index 731c56d5f8e4..99c09645be81 100644
--- a/shell/browser/usb/usb_chooser_context_factory.h
+++ b/shell/browser/usb/usb_chooser_context_factory.h
@@ -5,6 +5,8 @@
 #ifndef ELECTRON_SHELL_BROWSER_USB_USB_CHOOSER_CONTEXT_FACTORY_H_
 #define ELECTRON_SHELL_BROWSER_USB_USB_CHOOSER_CONTEXT_FACTORY_H_
 
+#include <memory>
+
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 namespace base {
@@ -34,7 +36,7 @@ class UsbChooserContextFactory : public BrowserContextKeyedServiceFactory {
   ~UsbChooserContextFactory() override;
 
   // BrowserContextKeyedServiceFactory methods:
-  KeyedService* BuildServiceInstanceFor(
+  std::unique_ptr<KeyedService> BuildServiceInstanceForBrowserContext(
       content::BrowserContext* profile) const override;
 };