Revert of Add PrefStore::GetValues

chrome/browser/supervised_user/supervised_user_pref_store.cc

Index: chrome/browser/supervised_user/supervised_user_pref_store.cc
diff --git a/chrome/browser/supervised_user/supervised_user_pref_store.cc b/chrome/browser/supervised_user/supervised_user_pref_store.cc
index 565ee8c05ed6c46f4ea3c16720fd6f6cfdceb7d2..546db70b9ce8d8ad2a4237e8d1aed811c5f46679 100644
--- a/chrome/browser/supervised_user/supervised_user_pref_store.cc
+++ b/chrome/browser/supervised_user/supervised_user_pref_store.cc
@@ -85,11 +85,6 @@
 bool SupervisedUserPrefStore::GetValue(const std::string& key,
                                        const base::Value** value) const {
   return prefs_->GetValue(key, value);
-}
-
-std::unique_ptr<base::DictionaryValue> SupervisedUserPrefStore::GetValues()
-    const {
-  return prefs_->AsDictionaryValue();
 }
 
 void SupervisedUserPrefStore::AddObserver(PrefStore::Observer* observer) {