Remove stale-while-revalidate experimental implementation.

net/http/http_network_session.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_HTTP_HTTP_NETWORK_SESSION_H_
 #define NET_HTTP_HTTP_NETWORK_SESSION_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 61 matching lines @@
     CTVerifier* cert_transparency_verifier;
     ProxyService* proxy_service;
     std::string ssl_session_cache_shard;
     SSLConfigService* ssl_config_service;
     HttpAuthHandlerFactory* http_auth_handler_factory;
     NetworkDelegate* network_delegate;
     base::WeakPtr<HttpServerProperties> http_server_properties;
     NetLog* net_log;
     HostMappingRules* host_mapping_rules;
     bool ignore_certificate_errors;
-    bool use_stale_while_revalidate;
     uint16 testing_fixed_http_port;
     uint16 testing_fixed_https_port;
     bool enable_tcp_fast_open_for_ssl;
 
     bool enable_spdy_compression;
     bool enable_spdy_ping_based_connection_checking;
     NextProto spdy_default_protocol;
     // The protocols supported by NPN (next protocol negotiation) during the
     // SSL handshake as well as by HTTP Alternate-Protocol.
     // TODO(mmenke):  This is currently empty by default, and alternate
@@ skipping 146 matching lines @@
 
   NextProtoVector next_protos_;
   bool enabled_protocols_[NUM_VALID_ALTERNATE_PROTOCOLS];
 
   Params params_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_SESSION_H_