[at-spi2-core: 2/4] atk-deprecations.md: Note on AtkValue and Firefox

[Federico Mena Quintero <federico src gnome org>]

commit f50d227861d688fd00f99d959aaa8b12f4e8aeff
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Jun 21 20:57:52 2022 -0500

    atk-deprecations.md: Note on AtkValue and Firefox

 devel-docs/atk-deprecations.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
---
diff --git a/devel-docs/atk-deprecations.md b/devel-docs/atk-deprecations.md
index 0ea33e2f..cf411cd4 100644
--- a/devel-docs/atk-deprecations.md
+++ b/devel-docs/atk-deprecations.md
@@ -7,3 +7,18 @@
 
 Note that Orca does not seem to use the `Document.GetLocale` method nor the
 `Accessible.Locale` property, so probably the code above from WebKitGtk is not exercised.
+
+## AtkValue
+
+The following methods are deprecated in `AtkValueIface` since 2014 (commit 98838b2a):
+
+* `get_current_value` - replaced with `get_value_and_text`
+* `set_current_value` - replaced with `set_value`
+
+And the following are replaced with `get_range`, which returns an `AtkRange` boxed type:
+
+* `get_maximum_value`
+* `get_minimum_value`
+* `get_minimum_increment`
+
+Firefox still does not implement `get_range`, `get_value_and_text`, `set_value`.  See bug #71.