Invoke the StartSyncFlare for prefs when performing an automatic reset.

chrome/browser/prefs/pref_hash_filter.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 CHROME_BROWSER_PREFS_PREF_HASH_FILTER_H_
 #define CHROME_BROWSER_PREFS_PREF_HASH_FILTER_H_
 
 #include <map>
 #include <set>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/prefs/interceptable_pref_filter.h"
 #include "chrome/browser/prefs/tracked/tracked_preference.h"
 
 class PrefHashStore;
 class PrefService;
 class PrefStore;
 class TrackedPreferenceValidationDelegate;
@@ skipping 30 matching lines @@
   struct TrackedPreferenceMetadata {
     size_t reporting_id;
     const char* name;
     EnforcementLevel enforcement_level;
     PrefTrackingStrategy strategy;
   };
 
   // Constructs a PrefHashFilter tracking the specified |tracked_preferences|
   // using |pref_hash_store| to check/store hashes. An optional |delegate| is
   // notified of the status of each preference as it is checked.
+  // If |on_reset| is provided, it will be invoked if a reset occurs in

[Nicolas Zea, 2014/07/18 21:11:16]

nit: might be better to call it something like reset_on_load_callback or
something, to make it clear it's only invoked on load as part of the name.

[gab, 2014/07/21 16:22:04]

Renamed to |on_reset_on_load|

+  // FilterOnLoad.
   // |reporting_ids_count| is the count of all possible IDs (possibly greater
   // than |tracked_preferences.size()|). If |report_super_mac_validity| is true,
   // the state of the super MAC will be reported via UMA during
   // FinalizeFilterOnLoad.
   PrefHashFilter(
       scoped_ptr<PrefHashStore> pref_hash_store,
       const std::vector<TrackedPreferenceMetadata>& tracked_preferences,
+      const base::Closure& on_reset,
       TrackedPreferenceValidationDelegate* delegate,
       size_t reporting_ids_count,
       bool report_super_mac_validity);
 
   virtual ~PrefHashFilter();
 
   // Registers required user preferences.
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   // Retrieves the time of the last reset event, if any, for the provided user
@@ skipping 29 matching lines @@
   // A map of paths to TrackedPreferences; this map owns this individual
   // TrackedPreference objects.
   typedef base::ScopedPtrHashMap<std::string, TrackedPreference>
       TrackedPreferencesMap;
   // A map from changed paths to their corresponding TrackedPreferences (which
   // aren't owned by this map).
   typedef std::map<std::string, const TrackedPreference*> ChangedPathsMap;
 
   scoped_ptr<PrefHashStore> pref_hash_store_;
 
+  // Invoked if a reset occurs in a call to FilterOnLoad.
+  const base::Closure on_reset_;
+
   TrackedPreferencesMap tracked_paths_;
 
   // The set of all paths whose value has changed since the last call to
   // FilterSerializeData.
   ChangedPathsMap changed_paths_;
 
   // Whether to report the validity of the super MAC at load time (via UMA).
   bool report_super_mac_validity_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefHashFilter);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_HASH_FILTER_H_