Use a utility process for the Mojo v8 proxy resolver.

chrome/browser/net/proxy_service_factory.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/net/proxy_service_factory.h"
 
+#include <string>
+
 #include "base/command_line.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/net/pref_proxy_config_tracker_impl.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/base/net_log.h"
 #include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
 #include "net/proxy/proxy_config_service.h"
 #include "net/proxy/proxy_script_fetcher_impl.h"
 #include "net/proxy/proxy_service.h"
 #include "net/proxy/proxy_service_v8.h"
 #include "net/url_request/url_request_context.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/proxy_config_service_impl.h"
 #include "chromeos/network/dhcp_proxy_script_fetcher_chromeos.h"
 #endif  // defined(OS_CHROMEOS)
 
 #if !defined(OS_IOS)
 #include "net/proxy/proxy_resolver_v8.h"
 #endif
 
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
+#include "chrome/browser/net/utility_process_mojo_proxy_resolver_factory.h"
 #include "net/proxy/proxy_service_mojo.h"
 #endif
 
 using content::BrowserThread;
 
 // static
 net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
     PrefProxyConfigTracker* tracker) {
   // The linux gconf-based proxy settings getter relies on being initialized
   // from the UI thread.
@@ skipping 90 matching lines @@
     net::DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher;
 #if defined(OS_CHROMEOS)
     dhcp_proxy_script_fetcher =
         new chromeos::DhcpProxyScriptFetcherChromeos(context);
 #else
     net::DhcpProxyScriptFetcherFactory dhcp_factory;
     dhcp_proxy_script_fetcher = dhcp_factory.Create(context);
 #endif
 
 #if !defined(OS_ANDROID)
-    if (command_line.HasSwitch(switches::kV8PacMojoInProcess)) {
+    if (command_line.HasSwitch(switches::kV8PacMojoOutOfProcess)) {
+      proxy_service = net::CreateProxyServiceUsingMojoFactory(
+          chrome_browser_net::UtilityProcessMojoProxyResolverFactory::
+              GetInstance(),
+          proxy_config_service, new net::ProxyScriptFetcherImpl(context),
+          dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
+          network_delegate);
+    } else if (command_line.HasSwitch(switches::kV8PacMojoInProcess)) {
       proxy_service = net::CreateProxyServiceUsingMojoInProcess(
           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
           dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
           network_delegate);
     } else
 #endif  // !defined(OS_ANDROID)
     {

[Lei Zhang, 2015/03/05 23:42:49]

Our cpp linter does not like this. How about:

#if FOO
...
#endif

if (!proxy_service) {
  proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(...);
}

[Anand Mistry (off Chromium), 2015/03/10 07:24:23]

Done.

       proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
           dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
           network_delegate);
     }
 #endif  // defined(OS_IOS)
   } else {
     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
         proxy_config_service,
         num_pac_threads,
         net_log);
   }
 
   proxy_service->set_quick_check_enabled(quick_check_enabled);
 
   return proxy_service;
 }