[orca] Add debugging line

[Joanmarie Diggs <joanied src gnome org>]

commit 32229bcf9d3087500cc42ae8f2a6bf45eef98b11
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Jul 16 11:02:21 2018 -0400

    Add debugging line

 src/orca/scripts/default.py | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/orca/scripts/default.py b/src/orca/scripts/default.py
index ebbf2490b..d94818137 100644
--- a/src/orca/scripts/default.py
+++ b/src/orca/scripts/default.py
@@ -2105,6 +2105,8 @@ class Script(script.Script):
             container = obj.parent
 
         if "Selection" not in pyatspi.listInterfaces(container):
+            msg = "INFO: %s and %s don't implement selection interface" % (obj, obj.parent)
+            debug.println(debug.LEVEL_INFO, msg, True)
             return self._whereAmISelectedText(inputEvent, obj)
 
         count = self.utilities.selectedChildCount(container)