HTTP2 draft 13: support unknown frame types and settings types as extensions.

net/tools/flip_server/spdy_interface.cc

Index: net/tools/flip_server/spdy_interface.cc
diff --git a/net/tools/flip_server/spdy_interface.cc b/net/tools/flip_server/spdy_interface.cc
index 73025dd54070eac3281b98e55e4d3b9f3ce86ceb..eec20c0643369397d12abb2f37e3ada84b636941 100644
--- a/net/tools/flip_server/spdy_interface.cc
+++ b/net/tools/flip_server/spdy_interface.cc
@@ -296,6 +296,10 @@ void SpdySM::OnRstStream(SpdyStreamId stream_id, SpdyRstStreamStatus status) {
   client_output_ordering_.RemoveStreamId(stream_id);
 }
 
+bool SpdySM::OnUnknownFrame(SpdyStreamId stream_id, int frame_type) {
+  return false;
+}
+
 size_t SpdySM::ProcessReadInput(const char* data, size_t len) {
   DCHECK(buffered_spdy_framer_);
   return buffered_spdy_framer_->ProcessInput(data, len);