Implement new SyncAPI and convert Preferences to it.

chrome/browser/sync/glue/syncable_service_adapter.cc

+// 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.
+
+#include "chrome/browser/sync/glue/syncable_service_adapter.h"
+
+#include "chrome/browser/sync/api/syncable_service.h"
+#include "chrome/browser/sync/api/sync_data.h"
+#include "chrome/browser/sync/glue/generic_change_processor.h"
+
+namespace browser_sync {
+
+SyncableServiceAdapter::SyncableServiceAdapter(
+    syncable::ModelType type,
+    SyncableService* service,
+    GenericChangeProcessor* sync_processor)
+    : syncing_(false),
+      type_(type),
+      service_(service),
+      sync_processor_(sync_processor) {
+}
+
+SyncableServiceAdapter::~SyncableServiceAdapter() {
+  if (syncing_) {
+    NOTREACHED();
+    LOG(ERROR) << "SyncableServiceAdapter for "
+               << syncable::ModelTypeToString(type_) << " destroyed before "
+               << "without being shut down properly.";
+    service_->StopSyncing(type_);
+  }
+}
+
+bool SyncableServiceAdapter::AssociateModels() {
+  syncing_ = true;
+  SyncDataList initial_sync_data;
+  if (!sync_processor_->GetSyncDataForType(type_, &initial_sync_data)) {
+    return false;
+  }
+  return service_->MergeDataAndStartSyncing(type_,
+                                            initial_sync_data,
+                                            sync_processor_);
+}
+
+bool SyncableServiceAdapter::DisassociateModels() {
+  service_->StopSyncing(type_);
+  syncing_ = false;
+  return true;
+}
+
+bool SyncableServiceAdapter::SyncModelHasUserCreatedNodes(bool* has_nodes) {
+  return sync_processor_->SyncModelHasUserCreatedNodes(type_, has_nodes);
+}
+
+void SyncableServiceAdapter::AbortAssociation() {
+  service_->StopSyncing(type_);
+  syncing_ = false;
+}
+
+bool SyncableServiceAdapter::CryptoReadyIfNecessary() {
+  return sync_processor_->CryptoReadyIfNecessary(type_);
+}
+
+}  // namespace browser_sync