am a69c170a: Merge "Rename BigramProperty to NgramProperty."

...ve/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

native/jni/src/suggest/core/dictionary/dictionary.cpp

native/jni/src/suggest/core/dictionary/dictionary.h

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

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

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

...est/core/policy/dictionary_structure_with_buffer_policy.h

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

.../structure/backward/v402/bigram/ver4_bigram_list_policy.h

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

.../structure/backward/v402/ver4_patricia_trie_node_writer.h

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

...onary/structure/backward/v402/ver4_patricia_trie_policy.h

...onary/structure/pt_common/dynamic_pt_gc_event_listeners.h

...ionary/structure/pt_common/dynamic_pt_updating_helper.cpp

...ctionary/structure/pt_common/dynamic_pt_updating_helper.h

...olicyimpl/dictionary/structure/pt_common/pt_node_writer.h

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

...policyimpl/dictionary/structure/v2/patricia_trie_policy.h

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