Add new, unused methods to SpdyFramerVisitorInterface.

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 fb5d29075c7b172573489e7a7ca3d0798e3fc0ba..d21b500ae9478fcd291723cf4894d406ff989daf 100644
--- a/net/tools/flip_server/spdy_interface.cc
+++ b/net/tools/flip_server/spdy_interface.cc
@@ -244,6 +244,18 @@ void SpdySM::OnStreamPadding(SpdyStreamId stream_id, size_t len) {
           << ", [" << len << "])";
 }
 
+SpdyHeadersHandlerInterface* SpdySM::OnHeaderFrameStart(
+    SpdyStreamId stream_id) {
+  LOG(FATAL) << ACCEPTOR_CLIENT_IDENT
+             << "SpdySM::OnHeaderFrameStart() not implemented.";
+  return nullptr;
+}
+
+void SpdySM::OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) {
+  LOG(FATAL) << ACCEPTOR_CLIENT_IDENT
+             << "SpdySM::OnHeaderFrameEnd() not implemented.";
+}
+
 void SpdySM::OnSynStream(SpdyStreamId stream_id,
                          SpdyStreamId associated_stream_id,
                          SpdyPriority priority,