ref: Change "profiles" directory to "runtime"

As per vanadium/issues#470

MultiPart: 4/10

Change-Id: I3ac47c1d9c514f7bbe1c80507c2b3db7fcd9f6d4
diff --git a/services/profile/profiled/main.go b/services/profile/profiled/main.go
index 381edec..9dd307f 100644
--- a/services/profile/profiled/main.go
+++ b/services/profile/profiled/main.go
@@ -14,7 +14,7 @@
 	"v.io/x/ref/lib/security/securityflag"
 	"v.io/x/ref/lib/signals"
 
-	_ "v.io/x/ref/profiles/roaming"
+	_ "v.io/x/ref/runtime/factories/roaming"
 )
 
 var (