Revert "Only allow HTTP/0.9 support on default ports."

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 287 matching lines @@
   static net::URLRequestContext* ConstructSystemRequestContext(
       IOThread::Globals* globals,
       const net::HttpNetworkSession::Params& params,
       net::NetLog* net_log);
 
   // Parse command line flags and use components/network_session_configurator to
   // configure |params|.
   static void ConfigureParamsFromFieldTrialsAndCommandLine(
       const base::CommandLine& command_line,
       bool is_quic_allowed_by_policy,
-      bool http_09_on_non_default_ports_enabled,
       net::HttpNetworkSession::Params* params);
 
   // TODO(willchan): Remove proxy script fetcher context since it's not
   // necessary now that I got rid of refcounting URLRequestContexts.
   // See IOThread::Globals for details.
   static net::URLRequestContext* ConstructProxyScriptFetcherContext(
       IOThread::Globals* globals,
       const net::HttpNetworkSession::Params& params,
       net::NetLog* net_log);
 
@@ skipping 61 matching lines @@
   std::unique_ptr<net::ProxyConfigService> system_proxy_config_service_;
 
   std::unique_ptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
 
   scoped_refptr<net::URLRequestContextGetter>
       system_url_request_context_getter_;
 
   // True if QUIC is allowed by policy.
   bool is_quic_allowed_by_policy_;
 
-  // True if HTTP/0.9 is allowed on non-default ports by policy.
-  bool http_09_on_non_default_ports_enabled_;
-
   const base::TimeTicks creation_time_;
 
   // Callback for updating data use prefs which needs to be initialized on UI
   // thread and passed to |ChromeNetworkDelegate|.
   metrics::UpdateUsagePrefCallbackType metrics_data_use_forwarder_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_