Introduce per-tab preferences service.

chrome/browser/prefs/pref_model_associator.h

 // Copyright (c) 2011 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_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_PREFS_PREF_MODEL_ASSOCIATOR_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 14 matching lines @@
 class Value;
 }
 
 // Contains all preference sync related logic.
 // TODO(sync): Merge this into PrefService once we separate the profile
 // PrefService from the local state PrefService.
 class PrefModelAssociator
     : public SyncableService,
       public base::NonThreadSafe {
  public:
-  explicit PrefModelAssociator(PrefService* pref_service);
+  PrefModelAssociator();
   virtual ~PrefModelAssociator();
 
   // SyncableService implementation.
   virtual SyncDataList GetAllSyncData(syncable::ModelType type) const OVERRIDE;
   virtual SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const SyncChangeList& change_list) OVERRIDE;
   virtual SyncError MergeDataAndStartSyncing(
       syncable::ModelType type,
       const SyncDataList& initial_sync_data,
@@ skipping 32 matching lines @@
   static bool CreatePrefSyncData(const std::string& name,
                                  const base::Value& value,
                                  SyncData* sync_data);
 
   // Extract preference value and name from sync specifics.
   base::Value* ReadPreferenceSpecifics(
       const sync_pb::PreferenceSpecifics& specifics,
       std::string* name);
 
  protected:
+  friend class PrefService;
   friend class ProfileSyncServicePreferenceTest;
 
   typedef std::map<std::string, SyncData> SyncDataMap;
 
-  // For testing.
-  PrefModelAssociator();
-
   // Create an association for a given preference. If |sync_pref| is valid,
   // signifying that sync has data for this preference, we reconcile their data
   // with ours and append a new UPDATE SyncChange to |sync_changes|. If
   // sync_pref is not set, we append an ADD SyncChange to |sync_changes| with
   // the current preference data.
   // Note: We do not modify the sync data for preferences that are either
   // controlled by policy (are not user modifiable) or have their default value
   // (are not user controlled).
   void InitPrefAndAssociate(const SyncData& sync_pref,
                             const std::string& pref_name,
                             SyncChangeList* sync_changes);
 
+  void SetPrefService(PrefService* pref_service);
+
   static base::Value* MergeListValues(
       const base::Value& from_value, const base::Value& to_value);
   static base::Value* MergeDictionaryValues(const base::Value& from_value,
                                             const base::Value& to_value);
 
   // Do we have an active association between the preferences and sync models?
   // Set when start syncing, reset in StopSyncing. While this is not set, we
   // ignore any local preference changes (when we start syncing we will look
   // up the most recent values anyways).
   bool models_associated_;
@@ skipping 20 matching lines @@
   // The PrefService we are syncing to.
   PrefService* pref_service_;
 
   // Sync's SyncChange handler. We push all our changes through this.
   SyncChangeProcessor* sync_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefModelAssociator);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_MODEL_ASSOCIATOR_H_