[atk] Add ATK_ROLE_MARK and ATK_ROLE_SUGGESTION

[Joanmarie Diggs <joanied src gnome org>]

commit 145b31158c89570020f2f7224e587fbf76829fcf
Author: Joanmarie Diggs <joanmarie diggs gmail com>
Date:   Wed Jan 15 10:24:29 2020 -0500

    Add ATK_ROLE_MARK and ATK_ROLE_SUGGESTION
    
    These roles are needed to improve the accessibility of rich text editors
    and other collaborative tools. The new roles parallel what was added to
    IAccessible2 in Windows.

 atk/atkobject.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/atk/atkobject.h b/atk/atkobject.h
index 0fda2f5..9a32fed 100644
--- a/atk/atkobject.h
+++ b/atk/atkobject.h
@@ -223,6 +223,18 @@ G_BEGIN_DECLS
  *@ATK_ROLE_CONTENT_INSERTION: Content previously inserted or proposed to be
  * inserted, e.g. in revision history or a content view providing suggestions
  * from reviewers. (Since: 2.34)
+ *@ATK_ROLE_MARK: A run of content that is marked or highlighted, such as for
+ * reference purposes, or to call it out as having a special purpose. If the
+ * marked content has an associated section in the document elaborating on the
+ * reason for the mark, then %ATK_RELATION_DETAILS should be used on the mark
+ * to point to that associated section. In addition, the reciprocal relation
+ * %ATK_RELATION_DETAILS_FOR should be used on the associated content section
+ * to point back to the mark. (Since: 2.36)
+ *@ATK_ROLE_SUGGESTION: A container for content that is called out as a proposed
+ * change from the current version of the document, such as by a reviewer of the
+ * content. This role should include either %ATK_ROLE_CONTENT_DELETION and/or
+ * %ATK_ROLE_CONTENT_INSERTION children, in any order, to indicate what the
+ * actual change is. (Since: 2.36)
  *@ATK_ROLE_LAST_DEFINED: not a valid role, used for finding end of the enumeration
  *
  * Describes the role of an object
@@ -358,6 +370,8 @@ typedef enum
   ATK_ROLE_FOOTNOTE,
   ATK_ROLE_CONTENT_DELETION,
   ATK_ROLE_CONTENT_INSERTION,
+  ATK_ROLE_MARK,
+  ATK_ROLE_SUGGESTION,
   ATK_ROLE_LAST_DEFINED
 } AtkRole;