Revert of Implement the NackModule as part of the new jitter buffer.

webrtc/modules/video_coding/histogram.h

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_MODULES_VIDEO_CODING_HISTOGRAM_H_
-#define WEBRTC_MODULES_VIDEO_CODING_HISTOGRAM_H_
-
-#include <cstddef>
-#include <vector>
-
-namespace webrtc {
-namespace video_coding {
-class Histogram {
- public:
-  // A discrete histogram where every bucket with range [0, num_buckets).
-  // Values greater or equal to num_buckets will be placed in the last bucket.
-  Histogram(size_t num_buckets, size_t max_num_values);
-
-  // Add a value to the histogram. If there already is max_num_values in the
-  // histogram then the oldest value will be replaced with the new value.
-  void Add(size_t value);
-
-  // Calculates how many buckets have to be summed in order to accumulate at
-  // least the given probability.
-  size_t InverseCdf(float probability) const;
-
-  // How many values that make up this histogram.
-  size_t NumValues() const;
-
- private:
-  // A circular buffer that holds the values that make up the histogram.
-  std::vector<size_t> values_;
-  std::vector<size_t> buckets_;
-  size_t index_;
-};
-
-}  // namespace video_coding
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_VIDEO_CODING_HISTOGRAM_H_