sync: Support nudges from non-blocking sync types

sync/test/engine/mock_nudge_handler.cc

+// 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/test/engine/mock_nudge_handler.h"
+#include "sync/internal_api/public/base/model_type.h"
+
+namespace syncer {
+
+MockNudgeHandler::MockNudgeHandler()
+    : num_initial_nudges_(0), num_commit_nudges_(0), num_refresh_nudges_(0) {
+}
+
+MockNudgeHandler::~MockNudgeHandler() {
+}
+
+void MockNudgeHandler::NudgeForInitialDownload(syncer::ModelType type) {
+  num_initial_nudges_++;
+}
+
+void MockNudgeHandler::NudgeForCommit(syncer::ModelType type) {
+  num_commit_nudges_++;
+}
+
+void MockNudgeHandler::NudgeForRefresh(syncer::ModelType type) {
+  num_refresh_nudges_++;
+}
+
+int MockNudgeHandler::GetNumInitialDownloadNudges() const {
+  return num_initial_nudges_;
+}
+
+int MockNudgeHandler::GetNumCommitNudges() const {
+  return num_commit_nudges_;
+}
+
+int MockNudgeHandler::GetNumRefreshNudges() const {
+  return num_refresh_nudges_;
+}
+
+void MockNudgeHandler::ClearCounters() {
+  num_initial_nudges_ = 0;
+  num_commit_nudges_ = 0;
+  num_refresh_nudges_ = 0;
+}
+
+}  // namespace syncer