[gnome-tweak-tool/gnome-3-26] widgets: Correctly handle overrides for Ubuntu session

[Jeremy Bicha <jbicha src gnome org>]

commit 9bbb8c22f3ec98d0dd7b59fbf70cbc0a9011dfe6
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Wed Sep 20 11:35:26 2017 -0400

    widgets: Correctly handle overrides for Ubuntu session
    
    The Ubuntu session in 17.10 uses org.gnome.mutter
    not org.gnome.shell.overrides
    
    https://bugzilla.gnome.org/show_bug.cgi?id=787844

 gtweak/widgets.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtweak/widgets.py b/gtweak/widgets.py
index 23d31b3..34c98f5 100644
--- a/gtweak/widgets.py
+++ b/gtweak/widgets.py
@@ -136,6 +136,8 @@ def adjust_schema_for_overrides(originalSchema, key, options):
     if (_shell.mode == 'classic'):
         overridesSchema = "org.gnome.shell.extensions.classic-overrides"
         overridesFile = None
+    elif (_shell.mode == 'ubuntu'):
+        return originalSchema
     else:
         overridesSchema = "org.gnome.shell.overrides"
         overridesFile = "org.gnome.shell.gschema.xml"