[Sync] Move ChangeRecord into its own file (change_record.{h,cc})

chrome/browser/sync/internal_api/change_record.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_SYNC_INTERNAL_API_CHANGE_RECORD_H_
+#define CHROME_BROWSER_SYNC_INTERNAL_API_CHANGE_RECORD_H_
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "chrome/browser/sync/protocol/password_specifics.pb.h"
+#include "chrome/browser/sync/protocol/sync.pb.h"
+#include "chrome/browser/sync/util/immutable.h"
+
+namespace base {
+class DictionaryValue;
+}  // namespace
+
+namespace sync_api {
+
+class BaseTransaction;
+
+// TODO(zea): One day get passwords playing nicely with the rest of encryption
+// and get rid of this.
+class ExtraPasswordChangeRecordData {
+ public:
+  ExtraPasswordChangeRecordData();
+  explicit ExtraPasswordChangeRecordData(
+      const sync_pb::PasswordSpecificsData& data);
+  virtual ~ExtraPasswordChangeRecordData();
+
+  // Transfers ownership of the DictionaryValue to the caller.
+  virtual base::DictionaryValue* ToValue() const;
+
+  const sync_pb::PasswordSpecificsData& unencrypted() const;
+ private:
+  sync_pb::PasswordSpecificsData unencrypted_;
+};
+
+// ChangeRecord indicates a single item that changed as a result of a sync
+// operation.  This gives the sync id of the node that changed, and the type
+// of change.  To get the actual property values after an ADD or UPDATE, the
+// client should get the node with InitByIdLookup(), using the provided id.
+struct ChangeRecord {
+  enum Action {
+    ACTION_ADD,
+    ACTION_DELETE,
+    ACTION_UPDATE,
+  };
+  ChangeRecord();
+  ~ChangeRecord();
+
+  // Transfers ownership of the DictionaryValue to the caller.
+  base::DictionaryValue* ToValue(const BaseTransaction* trans) const;
+
+  int64 id;
+  Action action;
+  sync_pb::EntitySpecifics specifics;
+  linked_ptr<ExtraPasswordChangeRecordData> extra;
+};
+
+typedef std::vector<ChangeRecord> ChangeRecordList;
+
+typedef browser_sync::Immutable<ChangeRecordList> ImmutableChangeRecordList;
+
+} // namespace sync_api
+
+#endif  // CHROME_BROWSER_SYNC_INTERNAL_API_CHANGE_RECORD_H_