Minor fixes in proxy configuration on iOS.

chrome/browser/net/pref_proxy_config_tracker_impl.cc

Index: chrome/browser/net/pref_proxy_config_tracker_impl.cc
diff --git a/chrome/browser/net/pref_proxy_config_tracker_impl.cc b/chrome/browser/net/pref_proxy_config_tracker_impl.cc
index 47b1078533c9896bfcd3a8fb783f4bf57912b8ff..6b4c30f35a42b13a52b695ae886cc6d716cbd3b2 100644
--- a/chrome/browser/net/pref_proxy_config_tracker_impl.cc
+++ b/chrome/browser/net/pref_proxy_config_tracker_impl.cc
@@ -314,10 +314,6 @@ void PrefProxyConfigTrackerImpl::Observe(
 
 ProxyPrefs::ConfigState PrefProxyConfigTrackerImpl::ReadPrefConfig(
     net::ProxyConfig* config) {
-#if defined(OS_IOS)
-  return ProxyPrefs::CONFIG_UNSET;
-#else
-
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // Clear the configuration and source.
@@ -346,5 +342,4 @@ ProxyPrefs::ConfigState PrefProxyConfigTrackerImpl::ReadPrefConfig(
   }
 
   return config_state;
-#endif  // defined(OS_IOS)
 }