add new preference for popup preview
this option is disabled as the default at x-large

Bug:2909517

Change-Id: Ifda1b7ff89bc4beeee02ba0f3e01d441a9435b37
diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index e77155d..d2166f7 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -29,6 +29,9 @@
     <!-- Option to play back sound on keypress in soft keyboard -->
     <string name="sound_on_keypress">Sound on keypress</string>
 
+    <!-- Option to pop up the character with a larger font above soft keyboard -->
+    <string name="popup_on_keypress">Popup on keypress</string>
+
     <!-- Option to enable using nearby keys when correcting/predicting -->
     <string name="hit_correction">Correct typing errors</string>