Add content description for folder up

 Bug: 6940202

Change-Id: I6b8c53285606fdcf6495a4ccf3c94a2037c8979b
diff --git a/res/values/strings.xml b/res/values/strings.xml
index ff396ce..5720410 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1008,5 +1008,7 @@
 
     <!-- Content description for tab switcher transition [CHAR LIMIT=NONE] -->
     <string name="accessibility_transition_navscreen">Tab management</string>
+    <!-- Content description for navigating up in the bookmark folder hierarchy [CHAR LIMIT=NONE] -->
+    <string name="accessibility_button_bookmarks_folder_up">Previous folder</string>
 
 </resources>