[gtk+] Add defines for title style classes

[Matthias Clasen <matthiasc src gnome org>]

commit 8328cfac92bea640db5dc5a2c5791ad604e15678
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 4 18:13:56 2014 -0400

    Add defines for title style classes

 docs/reference/gtk/gtk3-sections.txt |    2 ++
 gtk/gtkstylecontext.h                |   20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/gtk3-sections.txt b/docs/reference/gtk/gtk3-sections.txt
index d3e34c6..7b39805 100644
--- a/docs/reference/gtk/gtk3-sections.txt
+++ b/docs/reference/gtk/gtk3-sections.txt
@@ -6019,7 +6019,9 @@ GTK_STYLE_CLASS_SIDEBAR
 GTK_STYLE_CLASS_SLIDER
 GTK_STYLE_CLASS_SPINBUTTON
 GTK_STYLE_CLASS_SPINNER
+GTK_STYLE_CLASS_SUBTITLE
 GTK_STYLE_CLASS_SUGGESTED_ACTION
+GTK_STYLE_CLASS_TITLE
 GTK_STYLE_CLASS_TITLEBAR
 GTK_STYLE_CLASS_TOOLBAR
 GTK_STYLE_CLASS_TOOLTIP
diff --git a/gtk/gtkstylecontext.h b/gtk/gtkstylecontext.h
index d141476..175bed8 100644
--- a/gtk/gtkstylecontext.h
+++ b/gtk/gtkstylecontext.h
@@ -765,6 +765,26 @@ struct _GtkStyleContextClass
 #define GTK_STYLE_CLASS_TITLEBAR "titlebar"
 
 /**
+ * GTK_STYLE_CLASS_TITLE:
+ *
+ * A CSS class used for the title label in a titlebar in
+ * a toplevel window.
+ *
+ * Since: 3.14
+ */
+#define GTK_STYLE_CLASS_TITLE "title"
+
+/**
+ * GTK_STYLE_CLASS_SUBTITLE:
+ *
+ * A CSS class used for the subtitle label in a titlebar in
+ * a toplevel window.
+ *
+ * Since: 3.14
+ */
+#define GTK_STYLE_CLASS_SUBTITLE "subtitle"
+
+/**
  * GTK_STYLE_CLASS_NEEDS_ATTENTION:
  *
  * A CSS class used when an element needs the user attention,