Deprecate FLAGS_quic_disable_pre_30. Remove QUIC versions [25-29].

net/tools/quic/quic_dispatcher.h

 // 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.
 //
 // A server side dispatcher which dispatches a given client's data to their
 // stream.
 
 #ifndef NET_TOOLS_QUIC_QUIC_DISPATCHER_H_
 #define NET_TOOLS_QUIC_QUIC_DISPATCHER_H_
 
@@ skipping 274 matching lines @@
   // Undecryptable packets which are buffered until a connection can be
   // created to handle them.
   QuicBufferedPacketStore buffered_packets_;
 
   // This vector contains QUIC versions which we currently support.
   // This should be ordered such that the highest supported version is the first
   // element, with subsequent elements in descending order (versions can be
   // skipped as necessary).
   QuicVersionVector supported_versions_;
 
-  // FLAGS_quic_disable_pre_30
-  bool disable_quic_pre_30_;
-  // The list of versions that may be supported by this dispatcher.
-  // |supported_versions| is derived from this list and |disable_quic_pre_30_|.
+  // The std::list of versions that may be supported by this dispatcher.
+  // |supported_versions| is derived from this std::list and |disable_quic_pre_30_|.
   const QuicVersionVector allowed_supported_versions_;
 
   // Information about the packet currently being handled.
   IPEndPoint current_client_address_;
   IPEndPoint current_server_address_;
   const QuicReceivedPacket* current_packet_;
   QuicConnectionId current_connection_id_;
 
   QuicFramer framer_;
 
   // The last error set by SetLastError(), which is called by
   // framer_visitor_->OnError().
   QuicErrorCode last_error_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicDispatcher);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_DISPATCHER_H_