Add brotli content-encoding filter.

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 97 matching lines @@
     std::set<HostPortPair> forced_spdy_exclusions;
     // Process Alt-Svc headers.
     bool use_alternative_services;
     // Only honor alternative service entries which have a higher probability
     // than this value.
     double alternative_service_probability_threshold;
 
     // Enables NPN support.  Note that ALPN is always enabled.
     bool enable_npn;
 
+    // Enables Brotli Content-Encoding support.
+    bool enable_brotli;
+
     // Enables QUIC support.
     bool enable_quic;
     // Enables QUIC for proxies.
     bool enable_quic_for_proxies;
     // Instruct QUIC to use consistent ephemeral ports when talking to
     // the same server.
     bool enable_quic_port_selection;
     // Disables QUIC's 0-RTT behavior.
     bool quic_always_require_handshake_confirmation;
     // Disables QUIC connection pooling.
@@ skipping 162 matching lines @@
 
   NextProtoVector next_protos_;
   bool enabled_protocols_[NUM_VALID_ALTERNATE_PROTOCOLS];
 
   Params params_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_SESSION_H_