diff --git a/java/src/com/android/inputmethod/latin/LocaleUtils.java b/java/src/com/android/inputmethod/latin/LocaleUtils.java
index 3b08cab01..01c281b89 100644
--- a/java/src/com/android/inputmethod/latin/LocaleUtils.java
+++ b/java/src/com/android/inputmethod/latin/LocaleUtils.java
@@ -32,6 +32,9 @@ import java.util.Locale;
  * dictionary pack.
  */
 public class LocaleUtils {
+    private static final HashMap<String, Long> EMPTY_LT_HASH_MAP = CollectionUtils.newHashMap();
+    private static final String LOCALE_AND_TIME_STR_SEPARATER = ",";
+
     private LocaleUtils() {
         // Intentional empty constructor for utility class.
     }
@@ -219,4 +222,38 @@ public class LocaleUtils {
             return retval;
         }
     }
+
+    public static HashMap<String, Long> localeAndTimeStrToHashMap(String str) {
+        if (TextUtils.isEmpty(str)) {
+            return EMPTY_LT_HASH_MAP;
+        }
+        final String[] ss = str.split(LOCALE_AND_TIME_STR_SEPARATER);
+        final int N = ss.length;
+        if (N < 2 || N % 2 != 0) {
+            return EMPTY_LT_HASH_MAP;
+        }
+        final HashMap<String, Long> retval = CollectionUtils.newHashMap();
+        for (int i = 0; i < N / 2; ++i) {
+            final String localeStr = ss[i * 2];
+            final long time = Long.valueOf(ss[i * 2 + 1]);
+            retval.put(localeStr, time);
+        }
+        return retval;
+    }
+
+    public static String localeAndTimeHashMapToStr(HashMap<String, Long> map) {
+        if (map == null || map.isEmpty()) {
+            return "";
+        }
+        final StringBuilder builder = new StringBuilder();
+        for (String localeStr : map.keySet()) {
+            if (builder.length() > 0) {
+                builder.append(LOCALE_AND_TIME_STR_SEPARATER);
+            }
+            final Long time = map.get(localeStr);
+            builder.append(localeStr).append(LOCALE_AND_TIME_STR_SEPARATER);
+            builder.append(String.valueOf(time));
+        }
+        return builder.toString();
+    }
 }
diff --git a/java/src/com/android/inputmethod/latin/SettingsValues.java b/java/src/com/android/inputmethod/latin/SettingsValues.java
index dcd2532c1..d34da5e34 100644
--- a/java/src/com/android/inputmethod/latin/SettingsValues.java
+++ b/java/src/com/android/inputmethod/latin/SettingsValues.java
@@ -401,7 +401,7 @@ public class SettingsValues {
     public static long getLastUserHistoryWriteTime(
             final SharedPreferences prefs, final String locale) {
         final String str = prefs.getString(Settings.PREF_LAST_USER_DICTIONARY_WRITE_TIME, "");
-        final HashMap<String, Long> map = Utils.localeAndTimeStrToHashMap(str);
+        final HashMap<String, Long> map = LocaleUtils.localeAndTimeStrToHashMap(str);
         if (map.containsKey(locale)) {
             return map.get(locale);
         }
@@ -411,9 +411,9 @@ public class SettingsValues {
     public static void setLastUserHistoryWriteTime(
             final SharedPreferences prefs, final String locale) {
         final String oldStr = prefs.getString(Settings.PREF_LAST_USER_DICTIONARY_WRITE_TIME, "");
-        final HashMap<String, Long> map = Utils.localeAndTimeStrToHashMap(oldStr);
+        final HashMap<String, Long> map = LocaleUtils.localeAndTimeStrToHashMap(oldStr);
         map.put(locale, System.currentTimeMillis());
-        final String newStr = Utils.localeAndTimeHashMapToStr(map);
+        final String newStr = LocaleUtils.localeAndTimeHashMapToStr(map);
         prefs.edit().putString(Settings.PREF_LAST_USER_DICTIONARY_WRITE_TIME, newStr).apply();
     }
 
diff --git a/java/src/com/android/inputmethod/latin/Utils.java b/java/src/com/android/inputmethod/latin/Utils.java
index fc7a42100..eeec1eb6d 100644
--- a/java/src/com/android/inputmethod/latin/Utils.java
+++ b/java/src/com/android/inputmethod/latin/Utils.java
@@ -456,40 +456,4 @@ public class Utils {
         }
         return sDeviceOverrideValueMap.get(key);
     }
-
-    private static final HashMap<String, Long> EMPTY_LT_HASH_MAP = CollectionUtils.newHashMap();
-    private static final String LOCALE_AND_TIME_STR_SEPARATER = ",";
-    public static HashMap<String, Long> localeAndTimeStrToHashMap(String str) {
-        if (TextUtils.isEmpty(str)) {
-            return EMPTY_LT_HASH_MAP;
-        }
-        final String[] ss = str.split(LOCALE_AND_TIME_STR_SEPARATER);
-        final int N = ss.length;
-        if (N < 2 || N % 2 != 0) {
-            return EMPTY_LT_HASH_MAP;
-        }
-        final HashMap<String, Long> retval = CollectionUtils.newHashMap();
-        for (int i = 0; i < N / 2; ++i) {
-            final String localeStr = ss[i * 2];
-            final long time = Long.valueOf(ss[i * 2 + 1]);
-            retval.put(localeStr, time);
-        }
-        return retval;
-    }
-
-    public static String localeAndTimeHashMapToStr(HashMap<String, Long> map) {
-        if (map == null || map.isEmpty()) {
-            return "";
-        }
-        final StringBuilder builder = new StringBuilder();
-        for (String localeStr : map.keySet()) {
-            if (builder.length() > 0) {
-                builder.append(LOCALE_AND_TIME_STR_SEPARATER);
-            }
-            final Long time = map.get(localeStr);
-            builder.append(localeStr).append(LOCALE_AND_TIME_STR_SEPARATER);
-            builder.append(String.valueOf(time));
-        }
-        return builder.toString();
-    }
 }