Revert of Add new, unused methods to SpdyFramerVisitorInterface.

net/spdy/spdy_session.cc

Index: net/spdy/spdy_session.cc
diff --git a/net/spdy/spdy_session.cc b/net/spdy/spdy_session.cc
index 2c69922f7a3c8e9dbb77b79bfed9f5d3bd9e971b..6fa7a0338ba9efa80ada53a2049c311b689d3b9a 100644
--- a/net/spdy/spdy_session.cc
+++ b/net/spdy/spdy_session.cc
@@ -2118,16 +2118,6 @@
   it->second.stream->OnPaddingConsumed(len);
 }
 
-SpdyHeadersHandlerInterface* SpdySession::OnHeaderFrameStart(
-    SpdyStreamId stream_id) {
-  LOG(FATAL);
-  return nullptr;
-}
-
-void SpdySession::OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) {
-  LOG(FATAL);
-}
-
 void SpdySession::OnSettings(bool clear_persisted) {
   CHECK(in_io_loop_);