Move HistoricalInfo to property and use it in *Property.

...ve/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

...ni/src/suggest/core/dictionary/property/historical_info.h

...jni/src/suggest/core/dictionary/property/ngram_property.h

...i/src/suggest/core/dictionary/property/unigram_property.h

...ni/src/suggest/core/dictionary/property/word_property.cpp

...tructure/backward/v402/bigram/ver4_bigram_list_policy.cpp

...y/structure/backward/v402/content/bigram_dict_content.cpp

...dictionary/structure/backward/v402/content/bigram_entry.h

...ucture/backward/v402/content/probability_dict_content.cpp

...onary/structure/backward/v402/content/probability_entry.h

...tructure/backward/v402/ver4_patricia_trie_node_writer.cpp

...ary/structure/backward/v402/ver4_patricia_trie_policy.cpp

...cture/backward/v402/ver4_patricia_trie_writing_helper.cpp

...licyimpl/dictionary/structure/v2/patricia_trie_policy.cpp

...nary/structure/v4/content/language_model_dict_content.cpp

...yimpl/dictionary/structure/v4/content/probability_entry.h

...mpl/dictionary/structure/v4/ver4_patricia_trie_policy.cpp

...st/policyimpl/dictionary/utils/forgetting_curve_utils.cpp

...gest/policyimpl/dictionary/utils/forgetting_curve_utils.h

...structure/v4/content/language_model_dict_content_test.cpp