[gtk+] tests: Add a deprecation warning

[Benjamin Otte <otte src gnome org>]

commit f04c12bd2cefb692d6f56f2952f91d13dfe64202
Author: Benjamin Otte <otte redhat com>
Date:   Sun Jan 15 21:09:46 2012 +0100

    tests: Add a deprecation warning
    
    This should probably have been added a while ago...

 tests/css/parser/at-invalid-02.errors |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/tests/css/parser/at-invalid-02.errors b/tests/css/parser/at-invalid-02.errors
index 9cf27d4..38d1ec9 100644
--- a/tests/css/parser/at-invalid-02.errors
+++ b/tests/css/parser/at-invalid-02.errors
@@ -1 +1,2 @@
+at-invalid-02.css:1: error: GTK_CSS_PROVIDER_ERROR_DEPRECATED
 at-invalid-02.css:1: error: GTK_CSS_PROVIDER_ERROR_SYNTAX