Add bigram writing methods.

Bug: 6669677

Change-Id: Ib62f6c31c4bcbb41ac200dccccb13e366b3c2173
diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index ae4a02c..0fabb1b 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -68,6 +68,7 @@
     suggest/core/session/dic_traverse_session.cpp \
     $(addprefix suggest/policyimpl/dictionary/, \
         bigram/bigram_list_reading_utils.cpp \
+        bigram/dynamic_bigram_list_policy.cpp \
         header/header_policy.cpp \
         header/header_reading_utils.cpp \
         shortcut/shortcut_list_reading_utils.cpp \