That header was included in way too many places.
#include "gtkcssstylefuncsprivate.h"
#include "gtkcsstypedvalueprivate.h"
#include "gtkstylepropertiesprivate.h"
+#include "gtksymboliccolor.h"
#include "gtkthemingengine.h"
G_DEFINE_TYPE (GtkCssCustomProperty, _gtk_css_custom_property, GTK_TYPE_CSS_STYLE_PROPERTY)
#include "gtkcssstylepropertyprivate.h"
#include "gtkstylecontextprivate.h"
-#include "gtksymboliccolorprivate.h"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
#include "gtkcsscornervalueprivate.h"
#include "gtkcsseasevalueprivate.h"
#include "gtkcssenginevalueprivate.h"
-#include "gtkcssimagegradientprivate.h"
#include "gtkcssimageprivate.h"
+#include "gtkcssimagegradientprivate.h"
#include "gtkcssimagevalueprivate.h"
#include "gtkcssenumvalueprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkstyleproviderprivate.h"
#include "gtkintl.h"
+#include "gtksymboliccolorprivate.h"
#include "gtkwin32themeprivate.h"
/**
#include "gtkstyleproperties.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkstylecontextprivate.h"
-#include "gtksymboliccolorprivate.h"
G_BEGIN_DECLS
#include "gtkbuilderprivate.h"
#include "gtksizerequest.h"
#include "gtkstylecontextprivate.h"
-#include "gtksymboliccolor.h"
#include "gtkcssprovider.h"
#include "gtkmodifierstyle.h"
#include "gtkversion.h"