Revert of Make ProfileIOData's ProxyService fetch PACs with the main URLRequestContext

chrome/browser/profiles/profile_io_data.cc

Index: chrome/browser/profiles/profile_io_data.cc
diff --git a/chrome/browser/profiles/profile_io_data.cc b/chrome/browser/profiles/profile_io_data.cc
index a236a5702173a3b4d03731fd28f67bd317388b60..2c31e7109c0f5de51f95ffe06721b42fbd0a4d3e 100644
--- a/chrome/browser/profiles/profile_io_data.cc
+++ b/chrome/browser/profiles/profile_io_data.cc
@@ -674,11 +674,6 @@
   main_request_context_storage()->set_reporting_service(
       std::unique_ptr<net::ReportingService>());
 
-  // This should be shut down last, as any other requests may initiate more
-  // activity when the ProxyService aborts lookups.
-  if (proxy_service_)
-    proxy_service_->OnShutdown();
-
   // TODO(ajwong): These AssertNoURLRequests() calls are unnecessary since they
   // are already done in the URLRequestContext destructor.
   if (main_request_context_)
@@ -996,7 +991,7 @@
 
   main_request_context_->set_enable_brotli(io_thread_globals->enable_brotli);
 
-  std::unique_ptr<ChromeNetworkDelegate> chrome_network_delegate(
+  std::unique_ptr<ChromeNetworkDelegate> network_delegate(
       new ChromeNetworkDelegate(
 #if BUILDFLAG(ENABLE_EXTENSIONS)
           io_thread_globals->extension_event_router_forwarder.get(),
@@ -1005,7 +1000,7 @@
 #endif
           &enable_referrers_));
 #if BUILDFLAG(ENABLE_EXTENSIONS)
-  chrome_network_delegate->set_extension_info_map(
+  network_delegate->set_extension_info_map(
       profile_params_->extension_info_map.get());
   if (!command_line.HasSwitch(switches::kDisableExtensionsHttpThrottling)) {
     extension_throttle_manager_.reset(
@@ -1013,39 +1008,26 @@
   }
 #endif
 
-  chrome_network_delegate->set_url_blacklist_manager(
-      url_blacklist_manager_.get());
-  chrome_network_delegate->set_profile(profile_params_->profile);
-  chrome_network_delegate->set_profile_path(profile_params_->path);
-  chrome_network_delegate->set_cookie_settings(
-      profile_params_->cookie_settings.get());
-  chrome_network_delegate->set_enable_do_not_track(&enable_do_not_track_);
-  chrome_network_delegate->set_force_google_safe_search(
-      &force_google_safesearch_);
-  chrome_network_delegate->set_force_youtube_restrict(&force_youtube_restrict_);
-  chrome_network_delegate->set_allowed_domains_for_apps(
-      &allowed_domains_for_apps_);
-  chrome_network_delegate->set_data_use_aggregator(
+  network_delegate->set_url_blacklist_manager(url_blacklist_manager_.get());
+  network_delegate->set_profile(profile_params_->profile);
+  network_delegate->set_profile_path(profile_params_->path);
+  network_delegate->set_cookie_settings(profile_params_->cookie_settings.get());
+  network_delegate->set_enable_do_not_track(&enable_do_not_track_);
+  network_delegate->set_force_google_safe_search(&force_google_safesearch_);
+  network_delegate->set_force_youtube_restrict(&force_youtube_restrict_);
+  network_delegate->set_allowed_domains_for_apps(&allowed_domains_for_apps_);
+  network_delegate->set_data_use_aggregator(
       io_thread_globals->data_use_aggregator.get(), IsOffTheRecord());
-
-  std::unique_ptr<net::NetworkDelegate> network_delegate =
-      ConfigureNetworkDelegate(profile_params_->io_thread,
-                               std::move(chrome_network_delegate));
-
-  main_request_context_->set_host_resolver(
-      io_thread_globals->host_resolver.get());
 
   // NOTE: Proxy service uses the default io thread network delegate, not the
   // delegate just created.
   proxy_service_ = ProxyServiceFactory::CreateProxyService(
-      io_thread->net_log(), main_request_context_.get(), network_delegate.get(),
+      io_thread->net_log(),
+      io_thread_globals->proxy_script_fetcher_context.get(),
+      io_thread_globals->system_network_delegate.get(),
       std::move(profile_params_->proxy_config_service), command_line,
       io_thread->WpadQuickCheckEnabled(),
       io_thread->PacHttpsUrlStrippingEnabled());
-
-  main_request_context_storage_->set_network_delegate(
-      std::move(network_delegate));
-
   transport_security_state_.reset(new net::TransportSecurityState());
   base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
   transport_security_persister_.reset(
@@ -1137,8 +1119,8 @@
       base::Bind(&IOThread::UnregisterSTHObserver, base::Unretained(io_thread),
                  ct_tree_tracker_.get());
 
-  InitializeInternal(profile_params_.get(), protocol_handlers,
-                     std::move(request_interceptors));
+  InitializeInternal(std::move(network_delegate), profile_params_.get(),
+                     protocol_handlers, std::move(request_interceptors));
 
   profile_params_.reset();
   initialized_ = true;
@@ -1328,13 +1310,6 @@
       std::move(backend), false /* is_main_cache */);
 }
 
-std::unique_ptr<net::NetworkDelegate> ProfileIOData::ConfigureNetworkDelegate(
-    IOThread* io_thread,
-    std::unique_ptr<ChromeNetworkDelegate> chrome_network_delegate) const {
-  return base::WrapUnique<net::NetworkDelegate>(
-      chrome_network_delegate.release());
-}
-
 void ProfileIOData::SetCookieSettingsForTesting(
     content_settings::CookieSettings* cookie_settings) {
   DCHECK(!cookie_settings_.get());