Cleanup the UseSharedProxies preference.

chrome/browser/net/proxy_service_factory.h

Index: chrome/browser/net/proxy_service_factory.h
diff --git a/chrome/browser/net/proxy_service_factory.h b/chrome/browser/net/proxy_service_factory.h
index c0c26fdf09e7b38b90555c4cdc28eb27d43636f7..440457dde8b872c0bbea5e686cc1737730d84897 100644
--- a/chrome/browser/net/proxy_service_factory.h
+++ b/chrome/browser/net/proxy_service_factory.h
@@ -11,6 +11,7 @@ class ChromeProxyConfigService;
 class CommandLine;
 class PrefProxyConfigTrackerImpl;
 class PrefService;
+class Profile;
 
 #if defined(OS_CHROMEOS)
 namespace chromeos {
@@ -36,12 +37,15 @@ class ProxyServiceFactory {
 
 #if defined(OS_CHROMEOS)
   static chromeos::ProxyConfigServiceImpl* CreatePrefProxyConfigTracker(
-      PrefService* pref_service);
+      Profile* profile);
 #else
   static PrefProxyConfigTrackerImpl* CreatePrefProxyConfigTracker(
-      PrefService* pref_service);
+      Profile* profile);
 #endif  // defined(OS_CHROMEOS)
 
+  static PrefProxyConfigTrackerImpl* CreatePrefProxyConfigTrackerForLocalState(
+      PrefService* pref_service);
+
   // Create a proxy service according to the options on command line.
   static net::ProxyService* CreateProxyService(
       net::NetLog* net_log,