Update from https://crrev.com/309415

base/prefs/pref_value_store.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_PREFS_PREF_VALUE_STORE_H_
 #define BASE_PREFS_PREF_VALUE_STORE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 77 matching lines @@
   // true if a valid value was found. Most callers should use
   // Preference::GetRecommendedValue() instead of calling this method directly.
   bool GetRecommendedValue(const std::string& name,
                            base::Value::Type type,
                            const base::Value** out_value) const;
 
   // These methods return true if a preference with the given name is in the
   // indicated pref store, even if that value is currently being overridden by
   // a higher-priority source.
   bool PrefValueInManagedStore(const std::string& name) const;
+  bool PrefValueInSupervisedStore(const std::string& name) const;
   bool PrefValueInExtensionStore(const std::string& name) const;
   bool PrefValueInUserStore(const std::string& name) const;
 
   // These methods return true if a preference with the given name is actually
   // being controlled by the indicated pref store and not being overridden by
   // a higher-priority source.
   bool PrefValueFromExtensionStore(const std::string& name) const;
   bool PrefValueFromUserStore(const std::string& name) const;
   bool PrefValueFromRecommendedStore(const std::string& name) const;
   bool PrefValueFromDefaultStore(const std::string& name) const;
@@ skipping 150 matching lines @@
   // A mapping of preference names to their registered types.
   PrefTypeMap pref_types_;
 
   // True if not all of the PrefStores were initialized successfully.
   bool initialization_failed_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefValueStore);
 };
 
 #endif  // BASE_PREFS_PREF_VALUE_STORE_H_