Revert of Add new, unused methods to SpdyFramerVisitorInterface.

net/quic/quic_headers_stream.cc

Index: net/quic/quic_headers_stream.cc
diff --git a/net/quic/quic_headers_stream.cc b/net/quic/quic_headers_stream.cc
index 5b1f942610fa1e379aef374c25370df6a33a4d8d..d86437f2a8e3a644c39e1668c0921b53143b515c 100644
--- a/net/quic/quic_headers_stream.cc
+++ b/net/quic/quic_headers_stream.cc
@@ -71,16 +71,6 @@
 
   void OnStreamPadding(SpdyStreamId stream_id, size_t len) override {
     CloseConnection("SPDY frame padding received.");
-  }
-
-  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
-      SpdyStreamId stream_id) override {
-    LOG(FATAL);
-    return nullptr;
-  }
-
-  void OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) override {
-    LOG(FATAL);
   }
 
   void OnError(SpdyFramer* framer) override {