Throttle Socket watcher RTT notifications from QUIC

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/memory/ptr_util.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)
+    base::TimeDelta min_notification_interval,
+    OnUpdatedRTTAvailableCallback updated_rtt_observation_callback,
+    base::TickClock* tick_clock)
     : task_runner_(std::move(task_runner)),
-      updated_rtt_observation_callback_(updated_rtt_observation_callback) {}
+      min_notification_interval_(min_notification_interval),
+      updated_rtt_observation_callback_(updated_rtt_observation_callback),
+      tick_clock_(tick_clock) {
+  DCHECK(tick_clock_);
+}
 
 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_));
+  return base::MakeUnique<SocketWatcher>(
+      protocol, min_notification_interval_, task_runner_,
+      updated_rtt_observation_callback_, tick_clock_);
 }
 
 }  // namespace internal
 
 }  // namespace nqe
 
 }  // namespace net