Uses SpdyStringPiece instead of std::string in an expectation, as required by Chromium.
gfe-relnote: n/a (test only)
PiperOrigin-RevId: 285217337
Change-Id: Id328074fd68e0487aa49c5de745c27b2820cfc66
QUICHE (QUIC, Http/2, Etc) is Google‘s implementation of QUIC and related protocols. It powers Chromium as well as Google’s QUIC servers and some other projects.