[gtk/issue-2230] Add GtkCss API to the introspection data

[Emmanuele Bassi <ebassi src gnome org>]

commit 2497d982b0fa7713cb2ced89ab0e04f1ec900f58
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Nov 11 15:53:09 2019 +0000

    Add GtkCss API to the introspection data
    
    Some of the CSS API has been moved to a public namespace, so we need to
    include it into the introspection data we build in order for people to
    use it.
    
    Fixes: #2230

 gtk/meson.build | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index 65576f92c6..a309b1e46c 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -1104,6 +1104,8 @@ if build_gir
   gtk_introspection_sources = [
     gtk_public_headers,
     gtk_public_sources,
+    gtk_css_public_headers,
+    gtk_css_public_sources,
     gtk_deprecated_headers,
     gtk_deprecated_sources,
     a11y_headers,