[orca] Don't auto-enter focus mode for embedded role if reading PDF

[Joanmarie Diggs <joanied src gnome org>]

commit 8dbeec24c5d5d369a7b1317f1d863cf5178bb8e9
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Aug 28 13:12:31 2019 -0400

    Don't auto-enter focus mode for embedded role if reading PDF

 src/orca/scripts/web/script_utilities.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index d5fca8bcb..9f72926c6 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -1790,6 +1790,10 @@ class Utilities(script_utilities.Utilities):
 
         return handled
 
+    def inPDFViewer(self, obj=None):
+        uri = self.documentFrameURI()
+        return uri.lower().endswith(".pdf")
+
     def inTopLevelWebApp(self, obj=None):
         if not obj:
             obj = orca_state.locusOfFocus
@@ -1870,7 +1874,8 @@ class Utilities(script_utilities.Utilities):
 
         if role in focusModeRoles \
            and not self.isTextBlockElement(obj) \
-           and not self.hasNameAndActionAndNoUsefulChildren(obj):
+           and not self.hasNameAndActionAndNoUsefulChildren(obj) \
+           and not self.inPDFViewer(obj):
             return True
 
         if self.isGridDescendant(obj) \