Periodic wipe of the personalization dict.

Bug: 12216453

Change-Id: Ie59dd19c044e9b1eb9b8bd805366200737ea506a
diff --git a/java/res/values/config-common.xml b/java/res/values/config-common.xml
index ab16a90..c920152 100644
--- a/java/res/values/config-common.xml
+++ b/java/res/values/config-common.xml
@@ -139,4 +139,8 @@
     <dimen name="config_accessibility_edge_slop">8dp</dimen>
 
     <integer name="config_user_dictionary_max_word_length">48</integer>
+
+    <!-- Personalization configuration -->
+    <!-- -1 means periocical wipe of the personalization dict is disabled. -->
+    <integer name="config_personalization_dict_wipe_interval_in_days">-1</integer>
 </resources>