[Sync] Refactor non-frontend DTC to handle new API properly.

chrome/browser/sync/glue/data_type_change_processor.cc

Index: chrome/browser/sync/glue/data_type_change_processor.cc
diff --git a/chrome/browser/sync/glue/data_type_change_processor.cc b/chrome/browser/sync/glue/data_type_change_processor.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8e648134cc1bae1a3c475b4d813f3202ee8a5e59
--- /dev/null
+++ b/chrome/browser/sync/glue/data_type_change_processor.cc
@@ -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.
+
+#include "chrome/browser/sync/glue/data_type_change_processor.h"
+
+namespace browser_sync {
+
+DataTypeChangeProcessor::DataTypeChangeProcessor(
+    GenericChangeProcessor* change_processor)
+    : change_processor_(change_processor) {
+}
+
+DataTypeChangeProcessor::~DataTypeChangeProcessor() {}
+
+SyncError DataTypeChangeProcessor::ProcessSyncChanges(
+    const tracked_objects::Location& from_here,
+    const SyncChangeList& change_list) {
+  if (change_processor_.get()) {
+    return change_processor_->ProcessSyncChanges(from_here, change_list);
+  } else {
+    return SyncError(FROM_HERE, "Change processor not set yet.",
+                     syncable::UNSPECIFIED);
+  }
+}
+
+}  // namespace browser_sync