since:
77fa51003 Replace deprecated scoped_ptr with unique_ptr
c++11 has been required so <tuple> is safe to use
Change-Id: I873cb953104b361a8503b5839a3372ce2b99e73c
googletest imports tuple into testing to allow for compatibility across
c++ versions where tuple may be in std::tr1 or std. fixes deprecation
warnings under visual studio 2017
Change-Id: Id78b372d5478b12d8c8f63fd3f2166fec25aa8be