1 files changed, 50 insertions, 0 deletions
diff --git a/chrome/browser/sync/glue/extension_data.cc b/chrome/browser/sync/glue/extension_data.cc
new file mode 100644
index 0000000..eb4fea6
--- /dev/null
+++ b/chrome/browser/sync/glue/extension_data.cc
@@ -0,0 +1,50 @@
+// Copyright (c) 2010 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/extension_data.h"
+
+#include "base/logging.h"
+#include "chrome/browser/sync/glue/extension_util.h"
+
+namespace browser_sync {
+
+ExtensionData ExtensionData::FromData(
+    Source source, const sync_pb::ExtensionSpecifics& data) {
+  DcheckIsExtensionSpecificsValid(data);
+  ExtensionData extension_data;
+  extension_data.merged_data_ = extension_data.source_data_[source] = data;
+  DCHECK(AreExtensionSpecificsEqual(extension_data.merged_data(), data));
+  DCHECK(!extension_data.NeedsUpdate(source));
+  return extension_data;
+}
+
+const sync_pb::ExtensionSpecifics& ExtensionData::merged_data() const {
+  DcheckIsExtensionSpecificsValid(merged_data_);
+  return merged_data_;
+}
+
+bool ExtensionData::NeedsUpdate(Source source) const {
+  SourceDataMap::const_iterator it = source_data_.find(source);
+  return
+      (it == source_data_.end()) ||
+      !AreExtensionSpecificsEqual(it->second, merged_data_);
+}
+
+void ExtensionData::SetData(
+    Source source, bool merge_user_properties,
+    const sync_pb::ExtensionSpecifics& data) {
+  DcheckIsExtensionSpecificsValid(data);
+  source_data_[source] = data;
+  MergeExtensionSpecifics(data, merge_user_properties, &merged_data_);
+  DcheckIsExtensionSpecificsValid(merged_data_);
+}
+
+void ExtensionData::ResolveData(Source source) {
+  source_data_[source] = merged_data_;
+  DCHECK(!NeedsUpdate(source));
+}
+
+ExtensionData::ExtensionData() {}
+
+}  // namespace browser_sync