message: Don't remove native method if not found in native
  Summary: If an implementation of a method is not found in native, our static analysis might have missed something. We need to be conservative and add keep to the java native declarations.
diff: @@ -423,6 +423,10 @@ class JNINativeContextHelper {
  auto native_func = native::get_native_function_for_dex_method(m);
  if (native_func) {
  m_removable_natives.emplace(native_func);
  + } else {
  + // There's a native method which we don't find. Let's be conservative
  + // and ask Redex not to remove it.
  + m->rstate.set_root();
  }
  }
  });
  