[orca] Add ROLE_EMBEDDED to document roles in getDocumentForObject.

[Joanmarie Diggs <joanied src gnome org>]

commit 9834cc740f0e90e5df542a7b72db65ffd388c30f
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Jun 2 18:46:59 2015 -0400

    Add ROLE_EMBEDDED to document roles in getDocumentForObject.
    
    We cannot always count on embedded web apps having a document frame
    in its ancestry.

 .../scripts/toolkits/Gecko/script_utilities.py     |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/scripts/toolkits/Gecko/script_utilities.py 
b/src/orca/scripts/toolkits/Gecko/script_utilities.py
index 772f52e..0088f11 100644
--- a/src/orca/scripts/toolkits/Gecko/script_utilities.py
+++ b/src/orca/scripts/toolkits/Gecko/script_utilities.py
@@ -126,7 +126,7 @@ class Utilities(script_utilities.Utilities):
         if not obj:
             return None
 
-        roles = [pyatspi.ROLE_DOCUMENT_FRAME, pyatspi.ROLE_DOCUMENT_WEB]
+        roles = [pyatspi.ROLE_DOCUMENT_FRAME, pyatspi.ROLE_DOCUMENT_WEB, pyatspi.ROLE_EMBEDDED]
         isDocument = lambda x: x and x.getRole() in roles
         if isDocument(obj):
             return obj