Replace remaining shell references with service manager

services/service_manager/tests/shutdown/shutdown_unittest.cc

Index: services/service_manager/tests/shutdown/shutdown_unittest.cc
diff --git a/services/service_manager/tests/shutdown/shutdown_unittest.cc b/services/service_manager/tests/shutdown/shutdown_unittest.cc
index 3fbe4e37479e01a702d66c19cde4cc2f5d20c6b0..f3f5056c00d3aed6dde716833396a201733ec46a 100644
--- a/services/service_manager/tests/shutdown/shutdown_unittest.cc
+++ b/services/service_manager/tests/shutdown/shutdown_unittest.cc
@@ -21,7 +21,8 @@ class ShutdownTest : public test::ServiceTest {
 
 TEST_F(ShutdownTest, ConnectRace) {
   // This test exercises a number of potential shutdown races that can lead to
-  // client deadlock if any of various parts of the EDK or shell service are not
+  // client deadlock if any of various parts of the EDK or service manager are
+  // not
   // working as intended.
 
   mojom::ShutdownTestClientControllerPtr control;