chat: Change "profiles" directory to "runtime"

As per vanadium/issues#470

MultiPart: 7/10

Change-Id: Ib415355bc2dc2727d65416a9c06807e9fad33b5b
diff --git a/clients/shell/go/src/v.io/x/chat/channel.go b/clients/shell/go/src/v.io/x/chat/channel.go
index f376ba4..d14ea07 100644
--- a/clients/shell/go/src/v.io/x/chat/channel.go
+++ b/clients/shell/go/src/v.io/x/chat/channel.go
@@ -42,7 +42,7 @@
 	"v.io/v23/security/access"
 	mt "v.io/v23/services/mounttable"
 	"v.io/x/chat/vdl"
-	_ "v.io/x/ref/profiles/roaming"
+	_ "v.io/x/ref/runtime/factories/roaming"
 )
 
 // message is a message that will be displayed in the UI.