[gtk+] stylecontext: add GTK_STYLE_CLASS_LINKED

[Cosimo Cecchi <cosimoc src gnome org>]

commit 6740121fab319547360d8d7946928aa3df520e3a
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Nov 28 14:40:04 2011 -0500

    stylecontext: add GTK_STYLE_CLASS_LINKED
    
    "linked" is a style class for linked areas, such as a box containing
    buttons belonging to the same control.

 docs/reference/gtk/gtk3-sections.txt |    1 +
 gtk/gtkstylecontext.h                |    8 ++++++++
 2 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/gtk3-sections.txt b/docs/reference/gtk/gtk3-sections.txt
index 52f9713..d843e12 100644
--- a/docs/reference/gtk/gtk3-sections.txt
+++ b/docs/reference/gtk/gtk3-sections.txt
@@ -5658,6 +5658,7 @@ GTK_STYLE_CLASS_TOP
 GTK_STYLE_CLASS_BOTTOM
 GTK_STYLE_CLASS_LEFT
 GTK_STYLE_CLASS_RIGHT
+GTK_STYLE_CLASS_LINKED
 GTK_STYLE_REGION_COLUMN
 GTK_STYLE_REGION_COLUMN_HEADER
 GTK_STYLE_REGION_ROW
diff --git a/gtk/gtkstylecontext.h b/gtk/gtkstylecontext.h
index 7b5f8e8..30994fa 100644
--- a/gtk/gtkstylecontext.h
+++ b/gtk/gtkstylecontext.h
@@ -389,6 +389,14 @@ struct _GtkStyleContextClass
 #define GTK_STYLE_CLASS_RAISED "raised"
 
 /**
+ * GTK_STYLE_CLASS_LINKED:
+ *
+ * A CSS class to match a linked area, such as a box containing buttons
+ * belonging to the same control.
+ */
+#define GTK_STYLE_CLASS_LINKED "linked"
+
+/**
  * GTK_STYLE_CLASS_GRIP:
  *
  * A CSS class defining a resize grip.