Coarser levels for the SettingsEnforcement field trial.

chrome/browser/prefs/tracked/tracked_preference_helper.h

 // Copyright 2014 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 CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_
 #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 11 matching lines @@
     // current |enforcement_level| doesn't allow a reset for the detected state.
     WANTED_RESET,
     DO_RESET,
   };
 
   TrackedPreferenceHelper(const std::string& pref_path,
                           size_t reporting_id,
                           size_t reporting_ids_count,
                           PrefHashFilter::EnforcementLevel enforcement_level);
 
-  // Returns a ResetAction stating whether a reset is desired (DO_RESET) based
-  // on observing |value_state| or not (DONT_RESET). |allow_changes_|,
-  // |allow_seeding_|, and |allow_migration_| make the decision softer in favor
-  // of WANTED_RESET over DO_RESET in various scenarios.
+  // Returns a ResetAction stating whether a reset is desired (DO_RESET) or not
+  // (DONT_RESET) based on observing |value_state|. Can also return WANTED_RESET
+  // if a reset would have been desired but the current |enforcement_level|
+  // doesn't allow it.
   ResetAction GetAction(
       PrefHashStoreTransaction::ValueState value_state) const;
 
   // Reports |value_state| via UMA under |reporting_id_|.
   void ReportValidationResult(
       PrefHashStoreTransaction::ValueState value_state) const;
 
   // Reports |reset_action| via UMA under |reporting_id_|.
   void ReportAction(ResetAction reset_action) const;
 
   // Reports, via UMA, the |count| of split preference entries that were
   // considered invalid in a CHANGED event.
   void ReportSplitPreferenceChangedCount(size_t count) const;
 
  private:
   const std::string pref_path_;
 
   const size_t reporting_id_;
   const size_t reporting_ids_count_;
 
-  // Allow setting changes.
-  const bool allow_changes_;
-  // Allow seeding unknown values for atomic preferences.
-  const bool allow_seeding_;
-  // Allow migration of values validated by the old MAC algorithm.
-  const bool allow_migration_;
+  // Deny setting changes and hash seeding/migration.
+  const bool enforce_;
 
   DISALLOW_COPY_AND_ASSIGN(TrackedPreferenceHelper);
 };
 
 #endif  // CHROME_BROWSER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_