[Sync] Make ModelSafeWorker a true interface

chrome/browser/sync/test/engine/fake_model_safe_worker_registrar.cc

+// 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/test/engine/fake_model_safe_worker_registrar.h"
+
+#include "chrome/browser/sync/test/engine/fake_model_worker.h"
+
+namespace browser_sync {
+
+FakeModelSafeWorkerRegistrar::FakeModelSafeWorkerRegistrar(
+    const ModelSafeRoutingInfo& routes) : routes_(routes) {
+  std::set<ModelSafeGroup> groups;
+  for (ModelSafeRoutingInfo::const_iterator it = routes_.begin();
+       it != routes_.end(); ++it) {
+    groups.insert(it->second);
+  }
+
+  for (std::set<ModelSafeGroup>::const_iterator it = groups.begin();
+       it != groups.end(); ++it) {
+    workers_.push_back(make_scoped_refptr(new FakeModelWorker(*it)));
+  }
+}
+
+FakeModelSafeWorkerRegistrar::~FakeModelSafeWorkerRegistrar() {}
+
+void FakeModelSafeWorkerRegistrar::GetWorkers(
+    std::vector<ModelSafeWorker*>* out) {
+  for (std::vector<scoped_refptr<ModelSafeWorker> >::const_iterator it =
+           workers_.begin(); it != workers_.end(); ++it) {
+    out->push_back(it->get());
+  }
+}
+
+void FakeModelSafeWorkerRegistrar::GetModelSafeRoutingInfo(
+    ModelSafeRoutingInfo* out) {
+  *out = routes_;
+}
+
+}  // namespace browser_sync