Refactor preference syncing.

chrome/browser/prefs/pref_value_store.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_VALUE_STORE_H_
 #define CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/values.h"
 #include "chrome/common/pref_store.h"
 #include "content/browser/browser_thread.h"
 
 class FilePath;
+class PrefModelAssociator;
 class PrefNotifier;
 class PrefStore;
 
 // The PrefValueStore manages various sources of values for Preferences
 // (e.g., configuration policies, extensions, and user settings). It returns
 // the value of a Preference from the source with the highest priority, and
 // allows setting user-defined values for preferences that are not managed.
 //
 // Unless otherwise explicitly noted, all of the methods of this class must
 // be called on the UI thread.
@@ skipping 18 matching lines @@
   // |pref_notifier| facilitates broadcasting preference change notifications
   // to the world.
   PrefValueStore(PrefStore* managed_platform_prefs,
                  PrefStore* managed_cloud_prefs,
                  PrefStore* extension_prefs,
                  PrefStore* command_line_prefs,
                  PrefStore* user_prefs,
                  PrefStore* recommended_platform_prefs,
                  PrefStore* recommended_cloud_prefs,
                  PrefStore* default_prefs,
+                 PrefModelAssociator* pref_sync_associator,
                  PrefNotifier* pref_notifier);
   virtual ~PrefValueStore();
 
   // Creates a clone of this PrefValueStore with PrefStores overwritten
   // by the parameters passed, if unequal NULL.
   PrefValueStore* CloneAndSpecialize(PrefStore* managed_platform_prefs,
                                      PrefStore* managed_cloud_prefs,
                                      PrefStore* extension_prefs,
                                      PrefStore* command_line_prefs,
                                      PrefStore* user_prefs,
                                      PrefStore* recommended_platform_prefs,
                                      PrefStore* recommended_cloud_prefs,
                                      PrefStore* default_prefs,
+                                     PrefModelAssociator* pref_sync_associator,
                                      PrefNotifier* pref_notifier);
 
   // Gets the value for the given preference name that has the specified value
   // type. Values stored in a PrefStore that have the matching |name| but
   // a non-matching |type| are silently skipped. Returns true if a valid value
   // was found in any of the available PrefStores. Most callers should use
   // Preference::GetValue() instead of calling this method directly.
   bool GetValue(const std::string& name,
                 Value::ValueType type,
                 const Value** out_value) const;
@@ skipping 144 matching lines @@
   PrefStore* GetPrefStore(PrefStoreType type) {
     return pref_stores_[type].store();
   }
   const PrefStore* GetPrefStore(PrefStoreType type) const {
     return pref_stores_[type].store();
   }
 
   // Keeps the PrefStore references in order of precedence.
   PrefStoreKeeper pref_stores_[PREF_STORE_TYPE_MAX + 1];
 
+  // The associator for syncing preferences.
+  PrefModelAssociator* pref_sync_associator_;
+
   // Used for generating PREF_CHANGED and PREF_INITIALIZATION_COMPLETED
   // notifications. This is a weak reference, since the notifier is owned by the
   // corresponding PrefService.
   PrefNotifier* pref_notifier_;
 
   // A mapping of preference names to their registered types.
   PrefTypeMap pref_types_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefValueStore);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_