[orca] Chromium: Handle two more instances of defunct objects

[Joanmarie Diggs <joanied src gnome org>]

commit 0cd1e20e08ea65e17d5527ecce5e252a36ce8abc
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Nov 21 09:25:03 2018 -0500

    Chromium: Handle two more instances of defunct objects

 src/orca/scripts/toolkits/Chromium/script_utilities.py | 8 +++++++-
 src/orca/scripts/web/script_utilities.py               | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/src/orca/scripts/toolkits/Chromium/script_utilities.py 
b/src/orca/scripts/toolkits/Chromium/script_utilities.py
index cf7446ae6..d19a5edd5 100644
--- a/src/orca/scripts/toolkits/Chromium/script_utilities.py
+++ b/src/orca/scripts/toolkits/Chromium/script_utilities.py
@@ -121,7 +121,13 @@ class Utilities(web.Utilities):
             return False
 
         roles = [pyatspi.ROLE_LIST_BOX, pyatspi.ROLE_MENU]
-        child = pyatspi.findDescendant(frame, lambda x: x and x.getRole() in roles)
+        try:
+            child = pyatspi.findDescendant(frame, lambda x: x and x.getRole() in roles)
+        except:
+            msg = "CHROMIUM: Exception finding descendant of %s" % frame
+            debug.println(debug.LEVEL_INFO, msg, True)
+            child = None
+
         return child and not self.inDocumentContent(child)
 
     def canBeActiveWindow(self, window, clearCache=False):
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 4a197a43a..68b8ee976 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -2383,7 +2383,13 @@ class Utilities(script_utilities.Utilities):
         rv = False
 
         isLabel = lambda r: r.getRelationType() == pyatspi.RELATION_LABEL_FOR
-        relations = list(filter(isLabel, obj.getRelationSet()))
+        try:
+            relations = list(filter(isLabel, obj.getRelationSet()))
+        except:
+            msg = "WEB: Exception getting relations of %s" % obj
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return []
+
         if not relations:
             return []