Restore deleted string still referenced from code to fix the build.

Change-Id: Ideb39da09730960f555f2b928d699819c986531b
diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index a67ddf7..d64059f 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -180,6 +180,8 @@
     <string name="spoken_description_smiley">Smiley face</string>
     <!-- Spoken description for the "Return" keyboard key. -->
     <string name="spoken_description_return">Return</string>
+    <!-- Spoken description for the "\u2022" (BULLET) keyboard key. -->
+    <string name="spoken_description_dot">Dot</string>
 
     <!-- Voice related labels -->