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

net/quic/quic_framer.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.
 
 #ifndef NET_QUIC_QUIC_FRAMER_H_
 #define NET_QUIC_QUIC_FRAMER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 215 matching lines @@
                                       bool last_frame_in_packet);
   // Size in bytes of all ack frame fields without the missing packets or ack
   // blocks.
   static size_t GetMinAckFrameSize(
       QuicVersion version,
       QuicPacketNumberLength largest_observed_length);
   // Size in bytes of a stop waiting frame.
   static size_t GetStopWaitingFrameSize(
       QuicVersion version,
       QuicPacketNumberLength packet_number_length);
-  // Size in bytes of all reset stream frame without the error details.
-  // Used before QUIC_VERSION_25.
-  static size_t GetMinRstStreamFrameSize();
   // Size in bytes of all reset stream frame fields.
   static size_t GetRstStreamFrameSize();
   // Size in bytes of all connection close frame fields without the error
   // details and the missing packets from the enclosed ack frame.
   static size_t GetMinConnectionCloseFrameSize();
   // Size in bytes of all GoAway frame fields without the reason phrase.
   static size_t GetMinGoAwayFrameSize();
   // Size in bytes of all WindowUpdate frame fields.
   static size_t GetWindowUpdateFrameSize();
   // Size in bytes of all Blocked frame fields.
@@ skipping 359 matching lines @@
   QuicTime::Delta last_timestamp_;
   // The diversification nonce from the last received packet.
   DiversificationNonce last_nonce_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicFramer);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_FRAMER_H_