Implement reading side of updating methods of dpt.

Reading methods are used to determine the position to
be updated in dynamic patricia trie.

Bug: 6669677

Change-Id: Ie9acdcdbc73aa3fd4294c97aa39451a96b165ed9
diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index 3aa9738..ae4a02c 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -76,6 +76,7 @@
         dynamic_patricia_trie_policy.cpp \
         dynamic_patricia_trie_reading_helper.cpp \
         dynamic_patricia_trie_reading_utils.cpp \
+        dynamic_patricia_trie_writing_helper.cpp \
         patricia_trie_policy.cpp \
         patricia_trie_reading_utils.cpp) \
     $(addprefix suggest/policyimpl/dictionary/utils/, \