Revert 176015

chrome/browser/extensions/api/storage/syncable_settings_storage.h

Index: chrome/browser/extensions/api/storage/syncable_settings_storage.h
===================================================================
--- chrome/browser/extensions/api/storage/syncable_settings_storage.h	(revision 176046)
+++ chrome/browser/extensions/api/storage/syncable_settings_storage.h	(working copy)
@@ -1,111 +0,0 @@
-// Copyright (c) 2012 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_EXTENSIONS_API_STORAGE_SYNCABLE_SETTINGS_STORAGE_H_
-#define CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNCABLE_SETTINGS_STORAGE_H_
-
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/observer_list_threadsafe.h"
-#include "base/values.h"
-#include "chrome/browser/extensions/api/storage/setting_sync_data.h"
-#include "chrome/browser/extensions/api/storage/settings_observer.h"
-#include "chrome/browser/value_store/value_store.h"
-#include "sync/api/sync_change.h"
-#include "sync/api/syncable_service.h"
-
-namespace extensions {
-
-class SettingsSyncProcessor;
-
-// Decorates a ValueStore with sync behaviour.
-class SyncableSettingsStorage : public ValueStore {
- public:
-  SyncableSettingsStorage(
-      const scoped_refptr<SettingsObserverList>& observers,
-      const std::string& extension_id,
-      // Ownership taken.
-      ValueStore* delegate);
-
-  virtual ~SyncableSettingsStorage();
-
-  // ValueStore implementation.
-  virtual size_t GetBytesInUse(const std::string& key) OVERRIDE;
-  virtual size_t GetBytesInUse(const std::vector<std::string>& keys) OVERRIDE;
-  virtual size_t GetBytesInUse() OVERRIDE;
-  virtual ReadResult Get(const std::string& key) OVERRIDE;
-  virtual ReadResult Get(const std::vector<std::string>& keys) OVERRIDE;
-  virtual ReadResult Get() OVERRIDE;
-  virtual WriteResult Set(
-      WriteOptions options,
-      const std::string& key,
-      const Value& value) OVERRIDE;
-  virtual WriteResult Set(
-      WriteOptions options, const DictionaryValue& values) OVERRIDE;
-  virtual WriteResult Remove(const std::string& key) OVERRIDE;
-  virtual WriteResult Remove(const std::vector<std::string>& keys) OVERRIDE;
-  virtual WriteResult Clear() OVERRIDE;
-
-  // Sync-related methods, analogous to those on SyncableService (handled by
-  // ExtensionSettings), but with looser guarantees about when the methods
-  // can be called.
-
-  // Must only be called if sync isn't already active.
-  syncer::SyncError StartSyncing(
-      const DictionaryValue& sync_state,
-      scoped_ptr<SettingsSyncProcessor> sync_processor);
-
-  // May be called at any time (idempotent).
-  void StopSyncing();
-
-  // May be called at any time; changes will be ignored if sync isn't active.
-  syncer::SyncError ProcessSyncChanges(const SettingSyncDataList& sync_changes);
-
- private:
-  // Sends the changes from |result| to sync if it's enabled.
-  void SyncResultIfEnabled(const ValueStore::WriteResult& result);
-
-  // Sends all local settings to sync (synced settings assumed to be empty).
-  syncer::SyncError SendLocalSettingsToSync(
-      const DictionaryValue& settings);
-
-  // Overwrites local state with sync state.
-  syncer::SyncError OverwriteLocalSettingsWithSync(
-      const DictionaryValue& sync_state, const DictionaryValue& settings);
-
-  // Called when an Add/Update/Remove comes from sync.  Ownership of Value*s
-  // are taken.
-  syncer::SyncError OnSyncAdd(
-      const std::string& key,
-      Value* new_value,
-      ValueStoreChangeList* changes);
-  syncer::SyncError OnSyncUpdate(
-      const std::string& key,
-      Value* old_value,
-      Value* new_value,
-      ValueStoreChangeList* changes);
-  syncer::SyncError OnSyncDelete(
-      const std::string& key,
-      Value* old_value,
-      ValueStoreChangeList* changes);
-
-  // List of observers to settings changes.
-  const scoped_refptr<SettingsObserverList> observers_;
-
-  // Id of the extension these settings are for.
-  std::string const extension_id_;
-
-  // Storage area to sync.
-  const scoped_ptr<ValueStore> delegate_;
-
-  // Object which sends changes to sync.
-  scoped_ptr<SettingsSyncProcessor> sync_processor_;
-
-  DISALLOW_COPY_AND_ASSIGN(SyncableSettingsStorage);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNCABLE_SETTINGS_STORAGE_H_