Replace remaining shell references with service manager

services/service_manager/runner/host/mach_broker.h

Index: services/service_manager/runner/host/mach_broker.h
diff --git a/services/service_manager/runner/host/mach_broker.h b/services/service_manager/runner/host/mach_broker.h
index 43258420435f60f05ba0742f021c235e75437cd6..5d139da9916a7bb9ec31ef1cba501655eb7b5687 100644
--- a/services/service_manager/runner/host/mach_broker.h
+++ b/services/service_manager/runner/host/mach_broker.h
@@ -13,15 +13,16 @@ template <typename T> struct DefaultSingletonTraits;
 
 namespace service_manager {
 
-// A global singleton |MachBroker| is used by the shell to provide access to
-// Mach task ports for shell out-of-process applications.
+// A global singleton |MachBroker| is used by the service manager to provide
+// access to
+// Mach task ports for service manager out-of-process applications.
 class MachBroker {
  public:
   // Sends the task port of the current process to the parent over Mach IPC.
   // For use in child processes.
   static void SendTaskPortToParent();
 
-  // Returns the global |MachBroker|. For use in the shell.
+  // Returns the global |MachBroker|. For use in the service manager.
   static MachBroker* GetInstance();
 
   // Registers |pid| with a MACH_PORT_NULL task port in the port provider. A