Add iOS support to ProxyService

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 6b4c30f35a42b13a52b695ae886cc6d716cbd3b2..ab9f12ed3f2fa3a7eb7fb9c8c81d3013df21d602 100644
--- a/chrome/browser/net/pref_proxy_config_tracker_impl.cc
+++ b/chrome/browser/net/pref_proxy_config_tracker_impl.cc
@@ -314,6 +314,10 @@ void PrefProxyConfigTrackerImpl::Observe(
 
 ProxyPrefs::ConfigState PrefProxyConfigTrackerImpl::ReadPrefConfig(
     net::ProxyConfig* config) {
+#if defined(OS_IOS)
+  return ProxyPrefs::CONFIG_UNSET;

[wtc, 2012/08/30 18:52:01]

I suggest putting the rest of this function inside a #else
block.

I am surprised that the iOS compiler does not warn about
unreachable code after the return statement.

[eroman, 2012/08/31 20:02:43]

Why is this necessary?

+#endif
+
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // Clear the configuration and source.