Move shared files in net/quic/ into net/quic/core/

net/quic/quic_sustained_bandwidth_recorder.h

-// 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.
-
-#ifndef NET_QUIC_QUIC_SUSTAINED_BANDWIDTH_RECORDER_H_
-#define NET_QUIC_QUIC_SUSTAINED_BANDWIDTH_RECORDER_H_
-
-#include <stdint.h>
-
-#include "base/logging.h"
-#include "base/macros.h"
-#include "net/quic/quic_bandwidth.h"
-#include "net/quic/quic_time.h"
-
-namespace net {
-
-namespace test {
-class QuicSustainedBandwidthRecorderPeer;
-}  // namespace test
-
-// This class keeps track of a sustained bandwidth estimate to ultimately send
-// to the client in a server config update message. A sustained bandwidth
-// estimate is only marked as valid if the QuicSustainedBandwidthRecorder has
-// been given uninterrupted reliable estimates over a certain period of time.
-class NET_EXPORT_PRIVATE QuicSustainedBandwidthRecorder {
- public:
-  QuicSustainedBandwidthRecorder();
-
-  // As long as |in_recovery| is consistently false, multiple calls to this
-  // method over a 3 * srtt period results in storage of a valid sustained
-  // bandwidth estimate.
-  // |time_now| is used as a max bandwidth timestamp if needed.
-  void RecordEstimate(bool in_recovery,
-                      bool in_slow_start,
-                      QuicBandwidth bandwidth,
-                      QuicTime estimate_time,
-                      QuicWallTime wall_time,
-                      QuicTime::Delta srtt);
-
-  bool HasEstimate() const { return has_estimate_; }
-
-  QuicBandwidth BandwidthEstimate() const {
-    DCHECK(has_estimate_);
-    return bandwidth_estimate_;
-  }
-
-  QuicBandwidth MaxBandwidthEstimate() const {
-    DCHECK(has_estimate_);
-    return max_bandwidth_estimate_;
-  }
-
-  int64_t MaxBandwidthTimestamp() const {
-    DCHECK(has_estimate_);
-    return max_bandwidth_timestamp_;
-  }
-
-  bool EstimateRecordedDuringSlowStart() const {
-    DCHECK(has_estimate_);
-    return bandwidth_estimate_recorded_during_slow_start_;
-  }
-
- private:
-  friend class test::QuicSustainedBandwidthRecorderPeer;
-
-  // True if we have been able to calculate sustained bandwidth, over at least
-  // one recording period (3 * rtt).
-  bool has_estimate_;
-
-  // True if the last call to RecordEstimate had a reliable estimate.
-  bool is_recording_;
-
-  // True if the current sustained bandwidth estimate was generated while in
-  // slow start.
-  bool bandwidth_estimate_recorded_during_slow_start_;
-
-  // The latest sustained bandwidth estimate.
-  QuicBandwidth bandwidth_estimate_;
-
-  // The maximum sustained bandwidth seen over the lifetime of the connection.
-  QuicBandwidth max_bandwidth_estimate_;
-
-  // Timestamp indicating when the max_bandwidth_estimate_ was seen.
-  int64_t max_bandwidth_timestamp_;
-
-  // Timestamp marking the beginning of the latest recording period.
-  QuicTime start_time_;
-
-  DISALLOW_COPY_AND_ASSIGN(QuicSustainedBandwidthRecorder);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_SUSTAINED_BANDWIDTH_RECORDER_H_