Drop non-user policy in ConfigDirPolicyLoader on Chrome OS.

components/policy/core/common/policy_map.h

 // Copyright 2013 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 COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_
 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 
+#include "base/callback.h"
 #include "base/macros.h"
 #include "base/values.h"
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/policy_types.h"
 #include "components/policy/policy_export.h"
 
 namespace policy {
 
 // A mapping of policy names to policy values for a given policy namespace.
 class POLICY_EXPORT PolicyMap {
@@ skipping 45 matching lines @@
            PolicyLevel level,
            PolicyScope scope,
            PolicySource source,
            std::unique_ptr<base::Value> value,
            std::unique_ptr<ExternalDataFetcher> external_data_fetcher);
   void Set(const std::string& policy, Entry entry);
 
   // Erase the given |policy|, if it exists in this map.
   void Erase(const std::string& policy);
 
+  // Erase all entries for which |filter| returns false.
+  void EraseNonmatching(
+      const base::Callback<bool(const const_iterator)>& filter);
+
   // Swaps the internal representation of |this| with |other|.
   void Swap(PolicyMap* other);
 
   // |this| becomes a copy of |other|. Any existing policies are dropped.
   void CopyFrom(const PolicyMap& other);
 
   // Returns a copy of |this|.
   std::unique_ptr<PolicyMap> DeepCopy() const;
 
   // Merges policies from |other| into |this|. Existing policies are only
@@ skipping 10 matching lines @@
                 PolicyScope scope,
                 PolicySource source);
 
   // Compares this value map against |other| and stores all key names that have
   // different values or reference different external data in |differing_keys|.
   // This includes keys that are present only in one of the maps.
   // |differing_keys| is not cleared before the keys are added.
   void GetDifferingKeys(const PolicyMap& other,
                         std::set<std::string>* differing_keys) const;
 
-  // Removes all policies that don't have the specified |level|. This is a
-  // temporary helper method, until mandatory and recommended levels are served
-  // by a single provider.
-  // TODO(joaodasilva): Remove this. http://crbug.com/108999
-  void FilterLevel(PolicyLevel level);
-
   bool Equals(const PolicyMap& other) const;
   bool empty() const;
   size_t size() const;
 
   const_iterator begin() const;
   const_iterator end() const;
   void Clear();
 
  private:
   // Helper function for Equals().
   static bool MapEntryEquals(const PolicyMapType::value_type& a,
                              const PolicyMapType::value_type& b);
 
   PolicyMapType map_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyMap);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_