Fix URLRequestContext::CopyFrom in ios code

ios/chrome/browser/browser_state/chrome_browser_state_impl_io_data.mm

 // 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_impl_io_data.h"
 
 #include <memory>
 #include <set>
 #include <utility>
 
@@ skipping 398 matching lines @@
   lazy_params_.reset();
 }
 
 ChromeBrowserStateIOData::AppRequestContext*
 ChromeBrowserStateImplIOData::InitializeAppRequestContext(
     net::URLRequestContext* main_context) const {
   // Copy most state from the main context.
   AppRequestContext* context = new AppRequestContext();
   context->CopyFrom(main_context);
 
+  // Use a separate ChannelIDService.
+  std::unique_ptr<net::ChannelIDService> channel_id_service(
+      new net::ChannelIDService(new net::DefaultChannelIDStore(nullptr),
+                                base::WorkerPool::GetTaskRunner(true)));
+
+  // Build a new HttpNetworkSession that uses the new ChannelIDService.
+  net::HttpNetworkSession::Params network_params =
+      http_network_session_->params();
+  network_params.channel_id_service = channel_id_service.get();
+  std::unique_ptr<net::HttpNetworkSession> http_network_session(
+      new net::HttpNetworkSession(network_params));
+
   // Use a separate HTTP disk cache for isolated apps.
   std::unique_ptr<net::HttpCache::BackendFactory> app_backend =
       net::HttpCache::DefaultBackend::InMemory(0);
   std::unique_ptr<net::HttpCache> app_http_cache =
-      CreateHttpFactory(http_network_session_.get(), std::move(app_backend));
+      CreateHttpFactory(http_network_session.get(), std::move(app_backend));
 
   cookie_util::CookieStoreConfig ios_cookie_config(
       base::FilePath(),
       cookie_util::CookieStoreConfig::EPHEMERAL_SESSION_COOKIES,
       cookie_util::CookieStoreConfig::COOKIE_STORE_IOS, nullptr);
   std::unique_ptr<net::CookieStore> cookie_store =
       cookie_util::CreateCookieStore(ios_cookie_config);
 
-  // Transfer ownership of the cookies and cache to AppRequestContext.
+  // Transfer ownership of the ChannelIDStore, HttpNetworkSession, cookies, and
+  // cache to AppRequestContext.
+  context->SetChannelIDService(std::move(channel_id_service));
+  context->SetHttpNetworkSession(std::move(http_network_session));
   context->SetCookieStore(std::move(cookie_store));
   context->SetHttpTransactionFactory(std::move(app_http_cache));
 
   std::unique_ptr<net::URLRequestJobFactoryImpl> job_factory(
       new net::URLRequestJobFactoryImpl());
   // TODO(crbug.com/592012): Delete request_interceptor and its handling if
   // it's not needed in the future.
   URLRequestInterceptorScopedVector request_interceptors;
   std::unique_ptr<net::URLRequestJobFactory> top_job_factory(
       SetUpJobFactoryDefaults(std::move(job_factory),
@@ skipping 19 matching lines @@
     const base::Closure& completion) {
   DCHECK_CURRENTLY_ON(web::WebThread::IO);
   DCHECK(initialized());
 
   DCHECK(transport_security_state());
   // Completes synchronously.
   transport_security_state()->DeleteAllDynamicDataSince(time);
   DCHECK(http_server_properties_manager_);
   http_server_properties_manager_->Clear(completion);
 }