Rename UnigramProperty to WordProperty.

Bug: 12810574
Change-Id: If5ddd803948aaf6e491ddcbaa5436fb3af3f7257
diff --git a/native/jni/NativeFileList.mk b/native/jni/NativeFileList.mk
index d2f2259..c7061c8 100644
--- a/native/jni/NativeFileList.mk
+++ b/native/jni/NativeFileList.mk
@@ -32,7 +32,7 @@
         error_type_utils.cpp \
         multi_bigram_map.cpp \
         suggestions_output_utils.cpp \
-        unigram_property.cpp) \
+        word_property.cpp) \
     $(addprefix suggest/core/layout/, \
         additional_proximity_chars.cpp \
         proximity_info.cpp \