chat: Rename test.InitForTest to test.V23Init

The test.Init function remains unchanged.

MultiPart: 3/3

Change-Id: If166247f826c22594fea6d79fac71ac8020c80ba
diff --git a/clients/shell/go/src/v.io/x/chat/channel_test.go b/clients/shell/go/src/v.io/x/chat/channel_test.go
index 84bd900..cddd6dd 100644
--- a/clients/shell/go/src/v.io/x/chat/channel_test.go
+++ b/clients/shell/go/src/v.io/x/chat/channel_test.go
@@ -94,7 +94,7 @@
 }
 
 func TestMembers(t *testing.T) {
-	ctx, shutdown := test.InitForTest()
+	ctx, shutdown := test.V23Init()
 	defer shutdown()
 
 	mounttable, stopMountTable := startMountTable(t, ctx)
@@ -161,7 +161,7 @@
 }
 
 func TestBroadcastMessage(t *testing.T) {
-	ctx, shutdown := test.InitForTest()
+	ctx, shutdown := test.V23Init()
 	defer shutdown()
 
 	mounttable, stopMountTable := startMountTable(t, ctx)