Fix broken build

This is a followup change of I8376f4f5

Change-Id: I4de4cbc903beb71d805e62b5172076a949854bc0

java/src/com/android/inputmethod/keyboard/LatinKeyboard.java

@@ -110,6 +110,12 @@ public class LatinKeyboard extends Keyboard {
             super(context, new KeyboardParams());
         }
 
+        @Override
+        public Builder load(int xmlId, KeyboardId id) {
+            super.load(xmlId, id);
+            return this;
+        }
+
         @Override
         public LatinKeyboard build() {
             return new LatinKeyboard(mContext, mParams);