Replace remaining shell references with service manager

services/service_manager/background/tests/BUILD.gn

Index: services/service_manager/background/tests/BUILD.gn
diff --git a/services/service_manager/background/tests/BUILD.gn b/services/service_manager/background/tests/BUILD.gn
index 8d4f381598635f1e2de354e5f3e8b8951b9b15da..3b4a846046d2b300edf97620d16c9d51129b2db8 100644
--- a/services/service_manager/background/tests/BUILD.gn
+++ b/services/service_manager/background/tests/BUILD.gn
@@ -23,7 +23,7 @@ static_library("test_support") {
 source_set("unittests") {
   testonly = true
   sources = [
-    "background_shell_unittest.cc",
+    "background_service_manager_unittest.cc",
   ]
 
   deps = [
@@ -37,7 +37,7 @@ source_set("unittests") {
   ]
 
   data_deps = [
-    ":background_shell_test_service",
+    ":background_service_manager_test_service",
     ":test_manifest",
   ]
 }
@@ -50,7 +50,7 @@ mojom("test_service_interfaces") {
   use_new_wrapper_types = false
 }
 
-service("background_shell_test_service") {
+service("background_service_manager_test_service") {
   sources = [
     "test_service.cc",
   ]
@@ -68,11 +68,11 @@ service("background_shell_test_service") {
 }
 
 service_manifest("test_manifest") {
-  name = "background_shell_unittest"
+  name = "background_service_manager_unittest"
   source = "test_manifest.json"
 }
 
 service_manifest("test_service_manifest") {
-  name = "background_shell_test_service"
+  name = "background_service_manager_test_service"
   source = "test_service_manifest.json"
 }