Killing off QUICv12, including cleaning out all of the code for handling

net/tools/quic/quic_spdy_server_stream.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/tools/quic/quic_spdy_server_stream.h"
 
 #include "base/memory/singleton.h"
 #include "net/quic/quic_session.h"
 #include "net/spdy/spdy_framer.h"
 #include "net/tools/quic/quic_in_memory_cache.h"
@@ skipping 114 matching lines @@
     const BalsaHeaders& response_headers,
     StringPiece body) {
   // We only support SPDY and HTTP, and neither handles bidirectional streaming.
   if (!read_side_closed()) {
     CloseReadSide();
   }
 
   SpdyHeaderBlock header_block =
       SpdyUtils::ResponseHeadersToSpdyHeaders(response_headers);
 
-  if (version() > QUIC_VERSION_12) {
-    WriteHeaders(header_block, body.empty());
-  } else {
-    string headers_string =
-        session()->compressor()->CompressHeaders(header_block);
-    WriteOrBufferData(headers_string, body.empty());
-  }
+  WriteHeaders(header_block, body.empty());
 
   if (!body.empty()) {
     WriteOrBufferData(body, true);
   }
 }
 
 }  // namespace tools
 }  // namespace net