Rename shell namespace to service_manager

ash/mus/window_manager_application.h

Index: ash/mus/window_manager_application.h
diff --git a/ash/mus/window_manager_application.h b/ash/mus/window_manager_application.h
index c0f63d7a7da53e898cefaf7c4cde1eec649c6c08..4e21b9af7e375f3588cb60b4de07f3335ec3dda5 100644
--- a/ash/mus/window_manager_application.h
+++ b/ash/mus/window_manager_application.h
@@ -52,9 +52,9 @@ class WindowManager;
 
 // Hosts the window manager and the ash system user interface for mash.
 class WindowManagerApplication
-    : public shell::Service,
-      public shell::InterfaceFactory<mojom::WallpaperController>,
-      public shell::InterfaceFactory<ui::mojom::AcceleratorRegistrar>,
+    : public service_manager::Service,
+      public service_manager::InterfaceFactory<mojom::WallpaperController>,
+      public service_manager::InterfaceFactory<ui::mojom::AcceleratorRegistrar>,
       public mash::session::mojom::ScreenlockStateListener {
  public:
   WindowManagerApplication();
@@ -78,17 +78,17 @@ class WindowManagerApplication
   void InitializeComponents();
   void ShutdownComponents();
 
-  // shell::Service:
-  void OnStart(const shell::Identity& identity) override;
-  bool OnConnect(const shell::Identity& remote_identity,
-                 shell::InterfaceRegistry* registry) override;
+  // service_manager::Service:
+  void OnStart(const service_manager::Identity& identity) override;
+  bool OnConnect(const service_manager::Identity& remote_identity,
+                 service_manager::InterfaceRegistry* registry) override;
 
   // InterfaceFactory<mojom::WallpaperController>:
-  void Create(const shell::Identity& remote_identity,
+  void Create(const service_manager::Identity& remote_identity,
               mojom::WallpaperControllerRequest request) override;
 
-  // shell::InterfaceFactory<ui::mojom::AcceleratorRegistrar>:
-  void Create(const shell::Identity& remote_identity,
+  // service_manager::InterfaceFactory<ui::mojom::AcceleratorRegistrar>:
+  void Create(const service_manager::Identity& remote_identity,
               ui::mojom::AcceleratorRegistrarRequest request) override;
 
   // session::mojom::ScreenlockStateListener: