Add iOS support to ProxyService

chrome/browser/net/proxy_service_factory.cc

Index: chrome/browser/net/proxy_service_factory.cc
diff --git a/chrome/browser/net/proxy_service_factory.cc b/chrome/browser/net/proxy_service_factory.cc
index a738f083d67e6a597d5227916c128e0862ffbfc1..5c6937483fcbfcbecc3472f61d060688e5cea4f1 100644
--- a/chrome/browser/net/proxy_service_factory.cc
+++ b/chrome/browser/net/proxy_service_factory.cc
@@ -77,6 +77,9 @@ net::ProxyService* ProxyServiceFactory::CreateProxyService(
     const CommandLine& command_line) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
+#if defined(OS_IOS)
+  bool use_v8 = false;
+#else
   bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
   if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
     // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
@@ -84,6 +87,7 @@ net::ProxyService* ProxyServiceFactory::CreateProxyService(
     LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
     use_v8 = false;  // Fallback to non-v8 implementation.
   }
+#endif  // defined(OS_IOS)
 
   size_t num_pac_threads = 0u;  // Use default number of threads.
 
@@ -103,6 +107,9 @@ net::ProxyService* ProxyServiceFactory::CreateProxyService(
 
   net::ProxyService* proxy_service;
   if (use_v8) {
+#if defined(OS_IOS)
+    NOTREACHED();
+#else
     net::DhcpProxyScriptFetcherFactory dhcp_factory;
     if (command_line.HasSwitch(switches::kDisableDhcpWpad)) {
       dhcp_factory.set_enabled(false);
@@ -116,6 +123,7 @@ net::ProxyService* ProxyServiceFactory::CreateProxyService(
         context->host_resolver(),
         net_log,
         context->network_delegate());
+#endif  // defined(OS_IOS)
   } else {
     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
         proxy_config_service,