diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 166471009f138d..be3a5cd9e2e95f 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -85,7 +85,6 @@
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/tracing/chrome_tracing_delegate.h"
 #include "chrome/browser/translate/chrome_translate_client.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/blocked_content/blocked_window_params.h"
 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
 #include "chrome/browser/ui/browser_navigator.h"
@@ -218,6 +217,7 @@
 #elif defined(OS_MACOSX)
 #include "chrome/browser/chrome_browser_main_mac.h"
 #elif defined(OS_CHROMEOS)
+#include "ash/public/interfaces/constants.mojom.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/chromeos/arc/fileapi/arc_content_file_system_backend_delegate.h"
 #include "chrome/browser/chromeos/arc/fileapi/arc_documents_provider_backend_delegate.h"
@@ -3245,7 +3245,7 @@ void ChromeContentBrowserClient::RegisterInProcessServices(
     content::ServiceInfo info;
     info.factory = base::Bind(&ash_util::CreateEmbeddedAshService,
                               base::ThreadTaskRunnerHandle::Get());
-    services->insert(std::make_pair("ash", info));
+    services->insert(std::make_pair(ash::mojom::kServiceName, info));
   }
 #endif  // OS_CHROMEOS
 }
diff --git a/chrome/browser/chromeos/locale_change_guard.cc b/chrome/browser/chromeos/locale_change_guard.cc
index e3eeecfa83d5b3..2446aad4d76012 100644
--- a/chrome/browser/chromeos/locale_change_guard.cc
+++ b/chrome/browser/chromeos/locale_change_guard.cc
@@ -6,6 +6,7 @@
 
 #include <algorithm>
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ -15,7 +16,6 @@
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/common/pref_names.h"
@@ -72,8 +72,7 @@ void LocaleChangeGuard::ConnectToLocaleNotificationController() {
   if (!connector)
     return;
 
-  connector->BindInterface(ash_util::GetAshServiceName(),
-                           &notification_controller_);
+  connector->BindInterface(ash::mojom::kServiceName, &notification_controller_);
 }
 
 void LocaleChangeGuard::RevertLocaleChange() {
diff --git a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
index cd1566ba705a2f..ef070f78a2dc2c 100644
--- a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
+++ b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
@@ -9,6 +9,7 @@
 #include "ash/common/ash_constants.h"
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wm_shell.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ -205,8 +206,7 @@ void SetWallpaper(const gfx::ImageSkia& image,
       return;
 
     ash::mojom::WallpaperControllerPtr wallpaper_controller;
-    connector->BindInterface(ash_util::GetAshServiceName(),
-                             &wallpaper_controller);
+    connector->BindInterface(ash::mojom::kServiceName, &wallpaper_controller);
     // TODO(crbug.com/655875): Optimize ash wallpaper transport; avoid sending
     // large bitmaps over Mojo; use shared memory like BitmapUploader, etc.
     wallpaper_controller->SetWallpaper(*image.bitmap(), layout);
@@ -888,7 +888,7 @@ WallpaperManager::WallpaperManager()
   if (connection && connection->GetConnector()) {
     // Connect to the wallpaper controller interface in the ash service.
     ash::mojom::WallpaperControllerPtr wallpaper_controller_ptr;
-    connection->GetConnector()->BindInterface(ash_util::GetAshServiceName(),
+    connection->GetConnector()->BindInterface(ash::mojom::kServiceName,
                                               &wallpaper_controller_ptr);
     // Register this object as the wallpaper picker.
     wallpaper_controller_ptr->SetWallpaperPicker(
diff --git a/chrome/browser/chromeos/settings/shutdown_policy_forwarder.cc b/chrome/browser/chromeos/settings/shutdown_policy_forwarder.cc
index f48aae0d315163..70228895f784db 100644
--- a/chrome/browser/chromeos/settings/shutdown_policy_forwarder.cc
+++ b/chrome/browser/chromeos/settings/shutdown_policy_forwarder.cc
@@ -4,9 +4,9 @@
 
 #include "chrome/browser/chromeos/settings/shutdown_policy_forwarder.h"
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "ash/public/interfaces/shutdown.mojom.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "content/public/common/service_manager_connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 
@@ -25,7 +25,7 @@ void ShutdownPolicyForwarder::OnShutdownPolicyChanged(bool reboot_on_shutdown) {
   ash::mojom::ShutdownControllerPtr shutdown_controller;
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &shutdown_controller);
+      ->BindInterface(ash::mojom::kServiceName, &shutdown_controller);
 
   // Forward the setting to ash.
   shutdown_controller->SetRebootOnShutdown(reboot_on_shutdown);
diff --git a/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc b/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc
index 1a706fb72ae04f..15cd30ca515fbe 100644
--- a/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc
+++ b/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc
@@ -4,8 +4,8 @@
 
 #include "chrome/browser/ui/ash/app_list/app_list_presenter_service.h"
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "content/public/common/service_manager_connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "ui/app_list/presenter/app_list_presenter_impl.h"
@@ -16,7 +16,7 @@ AppListPresenterService::AppListPresenterService() : binding_(this) {
   if (connection && connection->GetConnector()) {
     // Connect to the app list interface in the ash service.
     app_list::mojom::AppListPtr app_list_ptr;
-    connection->GetConnector()->BindInterface(ash_util::GetAshServiceName(),
+    connection->GetConnector()->BindInterface(ash::mojom::kServiceName,
                                               &app_list_ptr);
     // Register this object as the app list presenter.
     app_list_ptr->SetAppListPresenter(binding_.CreateInterfacePtrAndBind());
diff --git a/chrome/browser/ui/ash/ash_util.cc b/chrome/browser/ui/ash/ash_util.cc
index 3209292593108b..7188b70b93ce36 100644
--- a/chrome/browser/ui/ash/ash_util.cc
+++ b/chrome/browser/ui/ash/ash_util.cc
@@ -49,11 +49,6 @@ class EmbeddedAshService : public service_manager::Service {
 
 }  // namespace
 
-// TODO(rockot): Remove this.
-const char* GetAshServiceName() {
-  return "ash";
-}
-
 std::unique_ptr<service_manager::Service> CreateEmbeddedAshService(
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
   return base::MakeUnique<EmbeddedAshService>(task_runner);
diff --git a/chrome/browser/ui/ash/ash_util.h b/chrome/browser/ui/ash/ash_util.h
index 8f9054424507d4..f267bc602673f1 100644
--- a/chrome/browser/ui/ash/ash_util.h
+++ b/chrome/browser/ui/ash/ash_util.h
@@ -20,10 +20,6 @@ class Accelerator;
 
 namespace ash_util {
 
-// Returns the name of the ash service depending on whether the browser is
-// running in classic ash or mash.
-const char* GetAshServiceName();
-
 // Creates an in-process Service instance of which can host common ash
 // interfaces.
 std::unique_ptr<service_manager::Service> CreateEmbeddedAshService(
diff --git a/chrome/browser/ui/ash/cast_config_client_media_router.cc b/chrome/browser/ui/ash/cast_config_client_media_router.cc
index d9ba5ac5846ef0..9074423def4f9c 100644
--- a/chrome/browser/ui/ash/cast_config_client_media_router.cc
+++ b/chrome/browser/ui/ash/cast_config_client_media_router.cc
@@ -8,6 +8,7 @@
 #include <utility>
 #include <vector>
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/optional.h"
@@ -21,7 +22,6 @@
 #include "chrome/browser/media/router/media_sinks_observer.h"
 #include "chrome/browser/media/router/media_source_helper.h"
 #include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
@@ -151,7 +151,7 @@ CastConfigClientMediaRouter::CastConfigClientMediaRouter() : binding_(this) {
   // client.
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &cast_config_);
+      ->BindInterface(ash::mojom::kServiceName, &cast_config_);
 
   // Register this object as the client interface implementation.
   ash::mojom::CastConfigClientAssociatedPtrInfo ptr_info;
diff --git a/chrome/browser/ui/ash/chrome_new_window_client.cc b/chrome/browser/ui/ash/chrome_new_window_client.cc
index c85da53e9cef81..90f4deed9f5873 100644
--- a/chrome/browser/ui/ash/chrome_new_window_client.cc
+++ b/chrome/browser/ui/ash/chrome_new_window_client.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/ash/chrome_new_window_client.h"
 
 #include "ash/content/keyboard_overlay/keyboard_overlay_view.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/macros.h"
 #include "chrome/browser/chromeos/file_manager/app_id.h"
 #include "chrome/browser/extensions/api/terminal/terminal_extension_helper.h"
@@ -12,7 +13,6 @@
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
@@ -61,8 +61,7 @@ Browser* ChromeNewWindowClient::GetActiveBrowser() {
 ChromeNewWindowClient::ChromeNewWindowClient() : binding_(this) {
   service_manager::Connector* connector =
       content::ServiceManagerConnection::GetForProcess()->GetConnector();
-  connector->BindInterface(ash_util::GetAshServiceName(),
-                           &new_window_controller_);
+  connector->BindInterface(ash::mojom::kServiceName, &new_window_controller_);
 
   // Register this object as the client interface implementation.
   ash::mojom::NewWindowClientAssociatedPtrInfo ptr_info;
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
index 52692bcb09d8b5..b938dc884df2ba 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
@@ -4,13 +4,13 @@
 
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/auto_reset.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/extensions/extension_app_icon_loader.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_icon_loader.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
 #include "chrome/browser/ui/ash/launcher/launcher_controller_helper.h"
 #include "content/public/common/service_manager_connection.h"
@@ -57,7 +57,7 @@ bool ChromeLauncherController::ConnectToShelfController() {
   if (!connector)
     return false;
 
-  connector->BindInterface(ash_util::GetAshServiceName(), &shelf_controller_);
+  connector->BindInterface(ash::mojom::kServiceName, &shelf_controller_);
   return true;
 }
 
diff --git a/chrome/browser/ui/ash/media_client.cc b/chrome/browser/ui/ash/media_client.cc
index 99ed587abdd093..a8affc52fbf1d4 100644
--- a/chrome/browser/ui/ash/media_client.cc
+++ b/chrome/browser/ui/ash/media_client.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/ash/media_client.h"
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ -13,7 +14,6 @@
 #include "chrome/browser/chromeos/extensions/media_player_event_router.h"
 #include "chrome/browser/media/webrtc/media_stream_capture_indicator.h"
 #include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/chrome_shell_content_state.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -132,7 +132,7 @@ MediaClient::MediaClient() : binding_(this), weak_ptr_factory_(this) {
 
   service_manager::Connector* connector =
       content::ServiceManagerConnection::GetForProcess()->GetConnector();
-  connector->BindInterface(ash_util::GetAshServiceName(), &media_controller_);
+  connector->BindInterface(ash::mojom::kServiceName, &media_controller_);
 
   // Register this object as the client interface implementation.
   ash::mojom::MediaClientAssociatedPtrInfo ptr_info;
diff --git a/chrome/browser/ui/ash/session_controller_client.cc b/chrome/browser/ui/ash/session_controller_client.cc
index 76a8a4865c96c9..bc659c8e04ac89 100644
--- a/chrome/browser/ui/ash/session_controller_client.cc
+++ b/chrome/browser/ui/ash/session_controller_client.cc
@@ -8,13 +8,13 @@
 #include <utility>
 
 #include "ash/public/cpp/session_types.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/users/multi_profile_user_controller.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/multi_user/user_switch_util.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/theme_resources.h"
@@ -246,7 +246,7 @@ void SessionControllerClient::OnSessionStateChanged() {
 void SessionControllerClient::ConnectToSessionControllerAndSetClient() {
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &session_controller_);
+      ->BindInterface(ash::mojom::kServiceName, &session_controller_);
 
   // Set as |session_controller_|'s client.
   session_controller_->SetClient(binding_.CreateInterfacePtrAndBind());
diff --git a/chrome/browser/ui/ash/system_tray_client.cc b/chrome/browser/ui/ash/system_tray_client.cc
index aec8fe2534658d..1bbcbcefb80fac 100644
--- a/chrome/browser/ui/ash/system_tray_client.cc
+++ b/chrome/browser/ui/ash/system_tray_client.cc
@@ -7,6 +7,7 @@
 #include "ash/common/login_status.h"
 #include "ash/common/wm_shell.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "ash/shell.h"
 #include "base/feature_list.h"
 #include "base/logging.h"
@@ -86,7 +87,7 @@ ash::mojom::UpdateSeverity GetUpdateSeverity(UpgradeDetector* detector) {
 SystemTrayClient::SystemTrayClient() : binding_(this) {
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &system_tray_);
+      ->BindInterface(ash::mojom::kServiceName, &system_tray_);
   // Register this object as the client interface implementation.
   system_tray_->SetClient(binding_.CreateInterfacePtrAndBind());
 
diff --git a/chrome/browser/ui/ash/volume_controller.cc b/chrome/browser/ui/ash/volume_controller.cc
index ea9eda2c1e5cc8..04dc8c8a663008 100644
--- a/chrome/browser/ui/ash/volume_controller.cc
+++ b/chrome/browser/ui/ash/volume_controller.cc
@@ -5,9 +5,9 @@
 #include "chrome/browser/ui/ash/volume_controller.h"
 
 #include "ash/public/interfaces/accelerator_controller.mojom.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "base/command_line.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/grit/browser_resources.h"
 #include "chromeos/audio/chromeos_sounds.h"
 #include "chromeos/audio/cras_audio_handler.h"
@@ -42,7 +42,7 @@ VolumeController::VolumeController() : binding_(this) {
   service_manager::Connector* connector =
       content::ServiceManagerConnection::GetForProcess()->GetConnector();
   ash::mojom::AcceleratorControllerPtr accelerator_controller_ptr;
-  connector->BindInterface(ash_util::GetAshServiceName(),
+  connector->BindInterface(ash::mojom::kServiceName,
                            &accelerator_controller_ptr);
 
   // Register this object as the volume controller.
diff --git a/chrome/browser/ui/ash/vpn_list_forwarder.cc b/chrome/browser/ui/ash/vpn_list_forwarder.cc
index d0559ec975ef35..8a4e968f7fbad5 100644
--- a/chrome/browser/ui/ash/vpn_list_forwarder.cc
+++ b/chrome/browser/ui/ash/vpn_list_forwarder.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/ash/vpn_list_forwarder.h"
 
+#include "ash/public/interfaces/constants.mojom.h"
 #include "ash/public/interfaces/vpn_list.mojom.h"
 #include "base/bind.h"
 #include "base/location.h"
@@ -12,7 +13,6 @@
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "components/user_manager/user.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/notification_service.h"
@@ -46,7 +46,7 @@ ash::mojom::VpnListPtr ConnectToVpnList() {
   ash::mojom::VpnListPtr vpn_list;
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &vpn_list);
+      ->BindInterface(ash::mojom::kServiceName, &vpn_list);
   return vpn_list;
 }
 
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index 4427b04e1ff303..672800271879b4 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -12,6 +12,7 @@
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "ash/common/wm_shell.h"
+#include "ash/public/interfaces/constants.mojom.h"
 #include "ash/shell.h"
 #include "ash/wm/lock_state_controller.h"
 #include "base/bind.h"
@@ -62,7 +63,6 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_metrics.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
-#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/webui/chromeos/login/error_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/l10n_util.h"
@@ -336,7 +336,7 @@ SigninScreenHandler::SigninScreenHandler(
 
   content::ServiceManagerConnection::GetForProcess()
       ->GetConnector()
-      ->BindInterface(ash_util::GetAshServiceName(), &touch_view_manager_ptr_);
+      ->BindInterface(ash::mojom::kServiceName, &touch_view_manager_ptr_);
   touch_view_manager_ptr_->AddObserver(
       touch_view_binding_.CreateInterfacePtrAndBind());
 }
diff --git a/mash/package/mash_packaged_service.cc b/mash/package/mash_packaged_service.cc
index 38d7f80013d563..ea219b2e5aef6e 100644
--- a/mash/package/mash_packaged_service.cc
+++ b/mash/package/mash_packaged_service.cc
@@ -26,6 +26,7 @@
 #if defined(OS_CHROMEOS)
 #include "ash/autoclick/mus/autoclick_application.h"  // nogncheck
 #include "ash/mus/window_manager_application.h"  // nogncheck
+#include "ash/public/interfaces/constants.mojom.h"    // nogncheck
 #include "ash/touch_hud/mus/touch_hud_application.h"  // nogncheck
 #endif
 
@@ -84,7 +85,7 @@ std::unique_ptr<service_manager::Service> MashPackagedService::CreateService(
   }
 
 #if defined(OS_CHROMEOS)
-  if (name == "ash")
+  if (name == ash::mojom::kServiceName)
     return base::WrapUnique(new ash::mus::WindowManagerApplication);
   if (name == "accessibility_autoclick")
     return base::WrapUnique(new ash::autoclick::AutoclickApplication);