Change visibility to avoid synthetic accessor method

...c/com/android/inputmethod/latin/ExpandableDictionary.java

java/src/com/android/inputmethod/latin/SuggestionsView.java

java/src/com/android/inputmethod/latin/UserDictionary.java

java/src/com/android/inputmethod/latin/Utils.java

...putmethod/latin/spellcheck/SpellCheckerProximityInfo.java