Implement new SyncAPI and convert Preferences to it.

chrome/browser/sync/api/syncable_service_mock.h

Index: chrome/browser/sync/api/syncable_service_mock.h
diff --git a/chrome/browser/sync/api/syncable_service_mock.h b/chrome/browser/sync/api/syncable_service_mock.h
new file mode 100644
index 0000000000000000000000000000000000000000..5390e4a8adcec837bf56f5dc2ac20efce2d3b91e
--- /dev/null
+++ b/chrome/browser/sync/api/syncable_service_mock.h
@@ -0,0 +1,27 @@
+// 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_API_SYNCABLE_SERVICE_MOCK_H_
+#define CHROME_BROWSER_SYNC_API_SYNCABLE_SERVICE_MOCK_H_
+#pragma once
+
+#include "chrome/browser/sync/api/syncable_service.h"
+#include "chrome/browser/sync/api/sync_change.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+class SyncableServiceMock : public SyncableService {
+ public:
+  SyncableServiceMock();
+  virtual ~SyncableServiceMock();
+
+  MOCK_METHOD3(MergeDataAndStartSyncing, bool(
+      syncable::ModelType type,
+      const SyncDataList& initial_sync_data,
+      SyncChangeProcessor* sync_processor));
+  MOCK_METHOD1(StopSyncing, void(syncable::ModelType type));
+  MOCK_CONST_METHOD1(GetAllSyncData, SyncDataList(syncable::ModelType type));
+  MOCK_METHOD1(ProcessSyncChanges, void(const SyncChangeList& change_list));
+};
+
+#endif  // CHROME_BROWSER_SYNC_API_SYNCABLE_SERVICE_MOCK_H_