Revert of Remove reference counting from HttpNetworkSession.

chrome/browser/io_thread.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 CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 36 matching lines @@
 namespace net {
 class CertPolicyEnforcer;
 class CertVerifier;
 class ChannelIDService;
 class CookieStore;
 class CTVerifier;
 class FtpTransactionFactory;
 class HostMappingRules;
 class HostResolver;
 class HttpAuthHandlerFactory;
-class HttpNetworkSession;
 class HttpServerProperties;
 class HttpTransactionFactory;
 class HttpUserAgentSettings;
 class NetworkDelegate;
 class NetworkQualityEstimator;
 class ProxyConfigService;
 class ProxyService;
 class SSLConfigService;
 class TransportSecurityState;
 class URLRequestBackoffManager;
@@ skipping 61 matching lines @@
     // This TransportSecurityState doesn't load or save any state. It's only
     // used to enforce pinning for system requests and will only use built-in
     // pins.
     scoped_ptr<net::TransportSecurityState> transport_security_state;
     scoped_ptr<net::CTVerifier> cert_transparency_verifier;
     scoped_ptr<net::CertPolicyEnforcer> cert_policy_enforcer;
     scoped_refptr<net::SSLConfigService> ssl_config_service;
     scoped_ptr<net::HttpAuthHandlerFactory> http_auth_handler_factory;
     scoped_ptr<net::HttpServerProperties> http_server_properties;
     scoped_ptr<net::ProxyService> proxy_script_fetcher_proxy_service;
-    scoped_ptr<net::HttpNetworkSession>
-        proxy_script_fetcher_http_network_session;
     scoped_ptr<net::HttpTransactionFactory>
         proxy_script_fetcher_http_transaction_factory;
     scoped_ptr<net::FtpTransactionFactory>
         proxy_script_fetcher_ftp_transaction_factory;
     scoped_ptr<net::URLRequestJobFactory>
         proxy_script_fetcher_url_request_job_factory;
     scoped_ptr<net::URLRequestBackoffManager> url_request_backoff_manager;
     scoped_ptr<net::URLSecurityManager> url_security_manager;
     // TODO(willchan): Remove proxy script fetcher context since it's not
     // necessary now that I got rid of refcounting URLRequestContexts.
     //
     // The first URLRequestContext is |system_url_request_context|. We introduce
     // |proxy_script_fetcher_context| for the second context. It has a direct
     // ProxyService, since we always directly connect to fetch the PAC script.
     scoped_ptr<net::URLRequestContext> proxy_script_fetcher_context;
     scoped_ptr<net::ProxyService> system_proxy_service;
-    scoped_ptr<net::HttpNetworkSession> system_http_network_session;
     scoped_ptr<net::HttpTransactionFactory> system_http_transaction_factory;
     scoped_ptr<net::URLRequestJobFactory> system_url_request_job_factory;
     scoped_ptr<net::URLRequestContext> system_request_context;
     SystemRequestContextLeakChecker system_request_context_leak_checker;
     // |system_cookie_store| and |system_channel_id_service| are shared
     // between |proxy_script_fetcher_context| and |system_request_context|.
     scoped_refptr<net::CookieStore> system_cookie_store;
 #if defined(ENABLE_EXTENSIONS)
     scoped_refptr<extensions::EventRouterForwarder>
         extension_event_router_forwarder;
@@ skipping 334 matching lines @@
   bool is_quic_allowed_by_policy_;
 
   const base::TimeTicks creation_time_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_