Revert 176015

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

-// 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_SETTINGS_SYNC_PROCESSOR_H_
-#define CHROME_BROWSER_EXTENSIONS_API_STORAGE_SETTINGS_SYNC_PROCESSOR_H_
-
-#include <set>
-#include <string>
-
-#include "chrome/browser/value_store/value_store_change.h"
-#include "sync/api/sync_error.h"
-
-namespace syncer {
-class SyncChangeProcessor;
-}  // namespace syncer
-
-namespace extensions {
-
-// A wrapper for a SyncChangeProcessor that deals specifically with the syncing
-// of a single extension's settings. Handles:
-//  - translating SettingChanges into calls into the Sync API.
-//  - deciding whether to ADD/REMOVE/SET depending on the current state of
-//    settings.
-//  - rate limiting (inherently per-extension, which is what we want).
-class SettingsSyncProcessor {
- public:
-  SettingsSyncProcessor(const std::string& extension_id,
-                        syncer::ModelType type,
-                        syncer::SyncChangeProcessor* sync_processor);
-  ~SettingsSyncProcessor();
-
-  // Initializes this with the initial state of sync.
-  void Init(const DictionaryValue& initial_state);
-
-  // Sends |changes| to sync.
-  syncer::SyncError SendChanges(const ValueStoreChangeList& changes);
-
-  // Informs this that |changes| have been receieved from sync. No action will
-  // be taken, but this must be notified for internal bookkeeping.
-  void NotifyChanges(const ValueStoreChangeList& changes);
-
-  syncer::ModelType type() { return type_; }
-
- private:
-  // ID of the extension the changes are for.
-  const std::string extension_id_;
-
-  // Sync model type. Either EXTENSION_SETTING or APP_SETTING.
-  const syncer::ModelType type_;
-
-  // The sync processor used to send changes to sync.
-  syncer::SyncChangeProcessor* const sync_processor_;
-
-  // Whether Init() has been called.
-  bool initialized_;
-
-  // Keys of the settings that are currently being synced. Used to decide what
-  // kind of action (ADD, UPDATE, REMOVE) to send to sync.
-  std::set<std::string> synced_keys_;
-
-  DISALLOW_COPY_AND_ASSIGN(SettingsSyncProcessor);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_STORAGE_SETTINGS_SYNC_PROCESSOR_H_