Finds all SharedFunctionInfos that corresponds to compile info in old version of the script.
function FindFunctionInfos(compile_info) {
      var wrappers = [];

      for (var i = 0; i < shared_infos.length; i++) {
        var wrapper = shared_infos[i];
        if (wrapper.start_position == compile_info.start_position &&
            wrapper.end_position == compile_info.end_position) {
          wrappers.push(wrapper);
        }
      }

      if (wrappers.length > 0) {
        return wrappers;
      }
    }