Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

chrome/browser/browser_main.cc

Index: chrome/browser/browser_main.cc
diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index 1f59543be950a93eba76cacf8a5b0bd72ab566fa..944cc94084a6a8e69bb40b286a1ce0e8bd3c2b5d 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -103,6 +103,7 @@
 #include "net/base/network_change_notifier.h"
 #include "net/http/http_network_layer.h"
 #include "net/http/http_stream_factory.h"
+#include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
 #include "net/socket/client_socket_pool_base.h"
 #include "net/socket/client_socket_pool_manager.h"
 #include "net/socket/tcp_client_socket.h"
@@ -624,6 +625,9 @@ void InitializeNetworkOptions(const CommandLine& parsed_command_line) {
     net::HttpStreamFactory::SetHostMappingRules(
         parsed_command_line.GetSwitchValueASCII(switches::kHostRules));
 
+  if (parsed_command_line.HasSwitch(switches::kEnableDhcpPac))
+    net::DhcpProxyScriptFetcherFactory::GetInstance()->SetEnabled(true);
+
   if (parsed_command_line.HasSwitch(switches::kEnableIPPooling))
     net::SpdySessionPool::enable_ip_pooling(true);