Enable devices page UI on MacOSX

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 1dc94cf3f08c1cdf9db08fb7190f1220053dfcf1..c0723d824ed578bb935bfd5aa229739a515c195c 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -116,7 +116,7 @@
 #include "chrome/browser/managed_mode/managed_user_sync_service.h"
 #endif
 
-#if defined(ENABLE_MDNS)
+#if defined(ENABLE_SERVICE_DISCOVERY)
 #include "chrome/browser/ui/webui/local_discovery/local_discovery_ui.h"
 #endif
 
@@ -399,14 +399,14 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   ManagedUserSyncService::RegisterProfilePrefs(registry);
 #endif
 
-#if defined(ENABLE_MDNS)
-  LocalDiscoveryUI::RegisterProfilePrefs(registry);
-#endif
-
 #if defined(ENABLE_NOTIFICATIONS)
   DesktopNotificationService::RegisterProfilePrefs(registry);
 #endif
 
+#if defined(ENABLE_SERVICE_DISCOVERY)
+  LocalDiscoveryUI::RegisterProfilePrefs(registry);
+#endif
+
 #if defined(OS_ANDROID)
   chrome_variations::VariationsService::RegisterProfilePrefs(registry);
   NewTabPagePrefs::RegisterProfilePrefs(registry);