css: Redo StyleProvider interface

We now use the GtkStleProviderPrivate interface, which hopefully is
faster and more conformant to CSS. Long term, it definitely should be
both.

I would have liked to split this up into multiple commits, but couldn't
find a way.

gtk/gtkcsslookupprivate.h

@@ -0,0 +1,46 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GTK_CSS_LOOKUP_PRIVATE_H__
+#define __GTK_CSS_LOOKUP_PRIVATE_H__
+
+#include <glib-object.h>
+#include "gtk/gtkbitmaskprivate.h"
+#include "gtk/gtkstyleproperties.h"
+
+
+G_BEGIN_DECLS
+
+typedef struct _GtkCssLookup GtkCssLookup;
+
+GtkCssLookup *          _gtk_css_lookup_new                     (void);
+void                    _gtk_css_lookup_free                    (GtkCssLookup       *lookup);
+
+const GtkBitmask *      _gtk_css_lookup_get_missing             (const GtkCssLookup *lookup);
+gboolean                _gtk_css_lookup_is_missing              (const GtkCssLookup *lookup,
+                                                                 guint               id);
+void                    _gtk_css_lookup_set                     (GtkCssLookup       *lookup,
+                                                                 guint               id,
+                                                                 const GValue       *value);
+GtkStyleProperties *    _gtk_css_lookup_resolve                 (GtkCssLookup       *lookup);
+
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_LOOKUP_PRIVATE_H__ */