Introduce a delegate to avoid hardcoding "chrome-extension" in net/.

chrome/browser/io_thread.cc

 // 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.
 
 #include "chrome/browser/io_thread.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 377 matching lines @@
   globals_ = new Globals;
 
   // Add an observer that will emit network change events to the ChromeNetLog.
   // Assuming NetworkChangeNotifier dispatches in FIFO order, we should be
   // logging the network change before other IO thread consumers respond to it.
   network_change_observer_.reset(
       new LoggingNetworkChangeObserver(net_log_));
 
   globals_->extension_event_router_forwarder =
       extension_event_router_forwarder_;
-  globals_->system_network_delegate.reset(new ChromeNetworkDelegate(
+  ChromeNetworkDelegate* network_delegate = new ChromeNetworkDelegate(
       extension_event_router_forwarder_,
       NULL,
       NULL,
       NULL,
       NULL,
-      &system_enable_referrers_));
+      &system_enable_referrers_);
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableExtensionsHttpThrottling)) {
+    network_delegate->NeverThrottleRequests();
+  }
+  globals_->system_network_delegate.reset(network_delegate);
   globals_->host_resolver.reset(
       CreateGlobalHostResolver(net_log_));
   globals_->cert_verifier.reset(net::CertVerifier::CreateDefault());
   globals_->transport_security_state.reset(new net::TransportSecurityState());
   globals_->ssl_config_service = GetSSLConfigService();
   globals_->http_auth_handler_factory.reset(CreateDefaultAuthHandlerFactory(
       globals_->host_resolver.get()));
   globals_->http_server_properties.reset(new net::HttpServerPropertiesImpl);
   // For the ProxyScriptFetcher, we use a direct ProxyService.
   globals_->proxy_script_fetcher_proxy_service.reset(
@@ skipping 25 matching lines @@
   session_params.net_log = net_log_;
   session_params.ssl_config_service = globals_->ssl_config_service;
   scoped_refptr<net::HttpNetworkSession> network_session(
       new net::HttpNetworkSession(session_params));
   globals_->proxy_script_fetcher_http_transaction_factory.reset(
       new net::HttpNetworkLayer(network_session));
   globals_->proxy_script_fetcher_ftp_transaction_factory.reset(
       new net::FtpNetworkLayer(globals_->host_resolver.get()));
 
   globals_->throttler_manager.reset(new net::URLRequestThrottlerManager());
+  globals_->throttler_manager->set_net_log(net_log_);
   // Always done in production, disabled only for unit tests.
   globals_->throttler_manager->set_enable_thread_checks(true);
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableExtensionsHttpThrottling)) {
-    globals_->throttler_manager->set_enforce_throttling(false);
-  }
-  globals_->throttler_manager->set_net_log(net_log_);
 
   globals_->proxy_script_fetcher_context.reset(
       ConstructProxyScriptFetcherContext(globals_, net_log_));
 
   sdch_manager_ = new net::SdchManager();
 
   // InitSystemRequestContext turns right around and posts a task back
   // to the IO thread, so we can't let it run until we know the IO
   // thread has started.
   //
@@ skipping 156 matching lines @@
       new net::HttpNetworkLayer(
           new net::HttpNetworkSession(system_params)));
   globals_->system_ftp_transaction_factory.reset(
       new net::FtpNetworkLayer(globals_->host_resolver.get()));
   globals_->system_request_context.reset(
       ConstructSystemRequestContext(globals_, net_log_));
 
   sdch_manager_->set_sdch_fetcher(
       new SdchDictionaryFetcher(system_url_request_context_getter_.get()));
 }