Make utility classes final

...android/inputmethod/accessibility/AccessibilityUtils.java

java/src/com/android/inputmethod/compat/CompatUtils.java

...com/android/inputmethod/compat/EditorInfoCompatUtils.java

...oid/inputmethod/compat/InputMethodServiceCompatUtils.java

...android/inputmethod/compat/SettingsSecureCompatUtils.java

...c/com/android/inputmethod/compat/SuggestionSpanUtils.java

...ndroid/inputmethod/compat/SuggestionsInfoCompatUtils.java

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

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

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

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

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

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

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

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

...id/inputmethod/latin/UserHistoryForgettingCurveUtils.java

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

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

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

.../src/com/android/inputmethod/latin/maketext/JarUtils.java