Fix sync watcher tests to not depend on timing.

Change-Id: Id60595e077684bfc231b4e05d93499ce322e452c
diff --git a/runtimes/google/vsync/watcher_test.go b/runtimes/google/vsync/watcher_test.go
index 45a9b44..64b5feb 100644
--- a/runtimes/google/vsync/watcher_test.go
+++ b/runtimes/google/vsync/watcher_test.go
@@ -318,8 +318,8 @@
 
 	s.Close()
 
-	if info.failWatchCount != n && info.failWatchCount != (n+1) {
-		t.Fatal("Watch() RPC retry count %d instead of %d or %d", info.failWatchCount, n, n+1)
+	if info.failWatchCount == 0 {
+		t.Fatal("Watch() RPC retry count is zero")
 	}
 }
 
@@ -337,8 +337,8 @@
 
 	s.Close()
 
-	if info.failRecvCount != n && info.failRecvCount != (n+1) {
-		t.Fatal("Recv() retry count %d instead of %d or %d", info.failRecvCount, n, n+1)
+	if info.failRecvCount == 0 {
+		t.Fatal("Recv() retry count is zero")
 	}
 }