Split HttpNetworkSession::Params into two structs.

ios/chrome/browser/browser_state/chrome_browser_state_io_data.cc

 // Copyright 2015 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.
 
 #include "ios/chrome/browser/browser_state/chrome_browser_state_io_data.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 466 matching lines @@
   channel_id_service_.reset(channel_id_service);
 }
 
 std::unique_ptr<net::HttpNetworkSession>
 ChromeBrowserStateIOData::CreateHttpNetworkSession(
     const ProfileParams& profile_params) const {
   net::URLRequestContext* context = main_request_context();
 
   IOSChromeIOThread* const io_thread = profile_params.io_thread;
 
-  net::HttpNetworkSession::Params params(io_thread->NetworkSessionParams());
-  net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(context,
-                                                                 &params);
+  net::HttpNetworkSession::Context session_context;
+  net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(
+      context, &session_context);
   if (!IsOffTheRecord() && io_thread->globals()->network_quality_estimator) {
-    params.socket_performance_watcher_factory =
+    session_context.socket_performance_watcher_factory =
         io_thread->globals()
             ->network_quality_estimator->GetSocketPerformanceWatcherFactory();
   }
 
-  return std::unique_ptr<net::HttpNetworkSession>(
-      new net::HttpNetworkSession(params));
+  return std::unique_ptr<net::HttpNetworkSession>(new net::HttpNetworkSession(
+      io_thread->NetworkSessionParams(), session_context));
 }
 
 std::unique_ptr<net::HttpCache> ChromeBrowserStateIOData::CreateMainHttpFactory(
     net::HttpNetworkSession* session,
     std::unique_ptr<net::HttpCache::BackendFactory> main_backend) const {
   return std::unique_ptr<net::HttpCache>(
       new net::HttpCache(session, std::move(main_backend), true));
 }
 
 std::unique_ptr<net::HttpCache> ChromeBrowserStateIOData::CreateHttpFactory(
     net::HttpNetworkSession* shared_session,
     std::unique_ptr<net::HttpCache::BackendFactory> backend) const {
   return std::unique_ptr<net::HttpCache>(
       new net::HttpCache(shared_session, std::move(backend), true));
 }