Remove duplicated code from sync related unit tests.

sync/api/sync_change_processor_delegator.cc

Index: sync/api/sync_change_processor_delegator.cc
diff --git a/sync/api/sync_change_processor_delegator.cc b/sync/api/sync_change_processor_delegator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..09e1bdd7cfb88b59ea0631e4ad248af6eedf6c2d
--- /dev/null
+++ b/sync/api/sync_change_processor_delegator.cc
@@ -0,0 +1,28 @@
+// Copyright 2014 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 "sync/api/sync_change_processor_delegator.h"
+
+namespace syncer {
+
+SyncChangeProcessorDelegator::SyncChangeProcessorDelegator(
+    syncer::SyncChangeProcessor* recipient)
+    : recipient_(recipient) {
+  DCHECK(recipient_);
+}
+
+SyncChangeProcessorDelegator::~SyncChangeProcessorDelegator() {}
+
+syncer::SyncError SyncChangeProcessorDelegator::ProcessSyncChanges(
+    const tracked_objects::Location& from_here,
+    const syncer::SyncChangeList& change_list) {
+  return recipient_->ProcessSyncChanges(from_here, change_list);
+}
+
+syncer::SyncDataList SyncChangeProcessorDelegator::GetAllSyncData(
+    syncer::ModelType type) const {
+  return recipient_->GetAllSyncData(type);
+}
+
+}  // namespace syncer