Rename mojo: to service:

services/shell/manifest.json

 {
   "manifest_version": 1,
-  "name": "mojo:shell",
+  "name": "service:shell",
   "display_name": "Service Manager",
   "capabilities": {
     "provided": {
       // Clients requesting this class are able to connect to other clients as
       // specific users other than their own.
       "shell:user_id": [ ],
       // Clients requesting this class are allowed to register clients for
       // processes they launch themselves.
       "shell:client_process": [ ],
       // Clients requesting this class are allowed to connect to other clients
       // in specific process instance groups.
       "shell:instance_name": [ ],
       // Clients requesting this class are run as a unique user id which is
       // visible to clients run as any user.
       "shell:all_users": [ ],
       "shell:block_wildcard":  [ ],
       // Clients requesting this class block inbound requests to bind interfaces
       // from other sources who specify wildcard rules in their manifest
       // capability interface sets.
       "shell:explicit_class": [ ]    
     },
     "required": {
-      "mojo:shell": { "classes": [ "shell:all_users" ] }
+      "service:shell": { "classes": [ "shell:all_users" ] }
     }
   }
 }