[orca] Ignore bogus focus event for active window from Gecko

[Joanmarie Diggs <joanied src gnome org>]

commit 6fcab989e323919d16149e24187be3f984dd5916
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Sep 13 10:16:33 2018 -0400

    Ignore bogus focus event for active window from Gecko

 src/orca/scripts/toolkits/Gecko/script.py | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/orca/scripts/toolkits/Gecko/script.py b/src/orca/scripts/toolkits/Gecko/script.py
index 5b77343a0..70700df69 100644
--- a/src/orca/scripts/toolkits/Gecko/script.py
+++ b/src/orca/scripts/toolkits/Gecko/script.py
@@ -182,6 +182,11 @@ class Script(web.Script):
         if self.utilities.isLayoutOnly(event.source):
             return
 
+        if event.source == orca_state.activeWindow:
+            msg = "GECKO: Ignoring event for active window."
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return
+
         # NOTE: This event type is deprecated and Orca should no longer use it.
         # This callback remains just to handle bugs in applications and toolkits
         # in which object:state-changed:focused events are missing. And in the