Rename shell namespace to service_manager

ash/common/mojo_interface_factory.h

Index: ash/common/mojo_interface_factory.h
diff --git a/ash/common/mojo_interface_factory.h b/ash/common/mojo_interface_factory.h
index c6ffed81945af2766be125e1308d5641cbda0adf..0851eb34550147ef730a1815f018436cebb3122d 100644
--- a/ash/common/mojo_interface_factory.h
+++ b/ash/common/mojo_interface_factory.h
@@ -13,7 +13,7 @@ namespace base {
 class SingleThreadTaskRunner;
 }
 
-namespace shell {
+namespace service_manager {
 class InterfaceRegistry;
 }
 
@@ -25,7 +25,7 @@ namespace mojo_interface_factory {
 // (when running ash in-process in chrome) or on the main thread (when running
 // in mash).
 ASH_EXPORT void RegisterInterfaces(
-    shell::InterfaceRegistry* registry,
+    service_manager::InterfaceRegistry* registry,
     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner);
 
 }  // namespace mojo_interface_factory