Add required header attributes for user/contacts dictionary.

...m/android/inputmethod/latin/ContactsBinaryDictionary.java

...android/inputmethod/latin/ExpandableBinaryDictionary.java

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

...method/latin/SynchronouslyLoadedUserBinaryDictionary.java

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

...rsonalization/DecayingExpandableBinaryDictionaryBase.java

...thod/latin/personalization/PersonalizationDictionary.java

...utmethod/latin/personalization/PersonalizationHelper.java

.../personalization/PersonalizationPredictionDictionary.java

...utmethod/latin/personalization/UserHistoryDictionary.java

...utmethod/latin/spellcheck/AndroidSpellCheckerService.java

...hod/latin/personalization/UserHistoryDictionaryTests.java