[Sync] Move some extension-sync-related logic to ExtensionService

chrome/browser/extensions/extension_sync_data.cc

Index: chrome/browser/extensions/extension_sync_data.cc
diff --git a/chrome/browser/extensions/extension_sync_data.cc b/chrome/browser/extensions/extension_sync_data.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0ef75b62a4d4d3d986426d70753c3aeddd721937
--- /dev/null
+++ b/chrome/browser/extensions/extension_sync_data.cc
@@ -0,0 +1,10 @@
+// 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/extensions/extension_sync_data.h"
+
+ExtensionSyncData::ExtensionSyncData()
+    : uninstalled(false), enabled(false), incognito_enabled(false) {}
+
+ExtensionSyncData::~ExtensionSyncData() {}