[Sync] Move //sync to //components/sync.

sync/api/sync_change.cc

-// 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.
-
-#include "sync/api/sync_change.h"
-
-#include <ostream>
-
-namespace syncer {
-
-SyncChange::SyncChange() : change_type_(ACTION_INVALID) {
-}
-
-SyncChange::SyncChange(
-    const tracked_objects::Location& from_here,
-    SyncChangeType change_type,
-    const SyncData& sync_data)
-    : location_(from_here),
-      change_type_(change_type),
-      sync_data_(sync_data) {
-  DCHECK(IsValid());
-}
-
-SyncChange::~SyncChange() {}
-
-bool SyncChange::IsValid() const {
-  if (change_type_ == ACTION_INVALID || !sync_data_.IsValid())
-    return false;
-
-  // Data from the syncer must always have valid specifics.
-  if (!sync_data_.IsLocal())
-    return IsRealDataType(sync_data_.GetDataType());
-
-  // Local changes must always have a tag and specify a valid datatype.
-  if (SyncDataLocal(sync_data_).GetTag().empty() ||
-      !IsRealDataType(sync_data_.GetDataType())) {
-    return false;
-  }
-
-  // Adds and updates must have a non-unique-title.
-  if (change_type_ == ACTION_ADD || change_type_ == ACTION_UPDATE)
-    return (!sync_data_.GetTitle().empty());
-
-  return true;
-}
-
-SyncChange::SyncChangeType SyncChange::change_type() const {
-  return change_type_;
-}
-
-SyncData SyncChange::sync_data() const {
-  return sync_data_;
-}
-
-tracked_objects::Location SyncChange::location() const {
-  return location_;
-}
-
-// static
-std::string SyncChange::ChangeTypeToString(SyncChangeType change_type) {
-  switch (change_type) {
-    case ACTION_INVALID:
-      return "ACTION_INVALID";
-    case ACTION_ADD:
-      return "ACTION_ADD";
-    case ACTION_UPDATE:
-      return "ACTION_UPDATE";
-    case ACTION_DELETE:
-      return "ACTION_DELETE";
-    default:
-      NOTREACHED();
-  }
-  return std::string();
-}
-
-std::string SyncChange::ToString() const {
-  return "{ " + location_.ToString() + ", changeType: " +
-      ChangeTypeToString(change_type_) + ", syncData: " +
-      sync_data_.ToString() + "}";
-}
-
-void PrintTo(const SyncChange& sync_change, std::ostream* os) {
-  *os << sync_change.ToString();
-}
-
-}  // namespace syncer