Remove enable_media_router.

chrome/browser/profiles/profile.cc

Index: chrome/browser/profiles/profile.cc
diff --git a/chrome/browser/profiles/profile.cc b/chrome/browser/profiles/profile.cc
index 16fea3cb6e8be834a43f07e6321ae172bf1db4e8..0da712173e1bcaa923ff57e91d85e7787274faaa 100644
--- a/chrome/browser/profiles/profile.cc
+++ b/chrome/browser/profiles/profile.cc
@@ -161,7 +161,6 @@ void Profile::RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
                                std::string());
 #endif
 
-#if defined(ENABLE_MEDIA_ROUTER)
   registry->RegisterBooleanPref(
       prefs::kMediaRouterCloudServicesPrefSet,
       false,
@@ -175,7 +174,6 @@ void Profile::RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
       false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterListPref(prefs::kMediaRouterTabMirroringSources);
-#endif
 
 #if defined(OS_CHROMEOS)
   registry->RegisterBooleanPref(prefs::kAllowScreenLock, true);