Split SocketWatcher and SocketWatcherFactory out of NQE

net/nqe/socket_watcher_factory.cc

+// Copyright 2016 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 "net/nqe/socket_watcher_factory.h"
+
+#include "base/time/time.h"
+#include "net/nqe/socket_watcher.h"
+
+namespace net {
+
+namespace nqe {
+
+namespace internal {
+
+SocketWatcherFactory::SocketWatcherFactory(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+    OnUpdatedRTTAvailableCallback updated_rtt_observation_callback)
+    : task_runner_(std::move(task_runner)),
+      updated_rtt_observation_callback_(updated_rtt_observation_callback) {}
+
+SocketWatcherFactory::~SocketWatcherFactory() {}
+
+std::unique_ptr<SocketPerformanceWatcher>
+SocketWatcherFactory::CreateSocketPerformanceWatcher(const Protocol protocol) {
+  return std::unique_ptr<SocketPerformanceWatcher>(new SocketWatcher(
+      protocol, task_runner_, updated_rtt_observation_callback_));
+}
+
+}  // namespace internal
+
+}  // namespace nqe
+
+}  // namespace net