[orca] Don't generate unrelated labels for objects which implement the document interface

[Joanmarie Diggs <joanied src gnome org>]

commit c610bf6aaf4a18b8b0b048cd0a4b0ba4efb16e4c
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Feb 21 14:15:06 2017 -0500

    Don't generate unrelated labels for objects which implement the document interface

 src/orca/script_utilities.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 72c9b84..cea4db9 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -2052,6 +2052,9 @@ class Utilities:
             if 'Table' in pyatspi.listInterfaces(x):
                 return x.childCount > 50
 
+            if 'Document' in pyatspi.listInterfaces(x):
+                return True
+
         match = pyatspi.findDescendant(root, isMatch)
         if match:
             msg = "INFO: %s has descendant %s" % (root, match)