Make HttpNetworkSession::host_mapping_rules no longer a pointer.

net/url_request/url_request_context_builder.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.
 
 // This class is useful for building a simple URLRequestContext. Most creators
 // of new URLRequestContexts should use this helper class to construct it. Call
 // any configuration params, and when done, invoke Build() to construct the
 // URLRequestContext. This URLRequestContext will own all its own storage.
 //
 // URLRequestContextBuilder and its associated params classes are initially
@@ skipping 76 matching lines @@
   struct NET_EXPORT HttpNetworkSessionParams {
     HttpNetworkSessionParams();
     ~HttpNetworkSessionParams();
 
     // Configutes |params| to match the settings in |this|.
     // TODO(mmenke):  Temporary utility function. Once everything is using a
     // URLRequestContextBuilder, can make this no longer publicly accessible.
     void ConfigureSessionParams(HttpNetworkSession::Params* params) const;
 
     // These fields mirror those in HttpNetworkSession::Params;
-    HostMappingRules* host_mapping_rules;
+    HostMappingRules host_mapping_rules;
     bool ignore_certificate_errors;
     uint16_t testing_fixed_http_port;
     uint16_t testing_fixed_https_port;
     bool enable_http2;
     bool enable_quic;
     std::string quic_user_agent_id;
     int quic_max_server_configs_stored_in_properties;
     QuicTagVector quic_connection_options;
     bool quic_close_sessions_on_ip_change;
     int quic_idle_connection_timeout_seconds;
@@ skipping 284 matching lines @@
   // Not owned by the context builder. Once it is set to a non-null value, it
   // is guaranteed to be non-null during the lifetime of |this|.
   SocketPerformanceWatcherFactory* socket_performance_watcher_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestContextBuilder);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_H_