Revert of Added first layer of the echo canceller 3 functionality

webrtc/modules/audio_processing/aec3/block_framer.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_AUDIO_PROCESSING_AEC3_BLOCK_FRAMER_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_BLOCK_FRAMER_H_
-
-#include <vector>
-
-#include "webrtc/base/array_view.h"
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/modules/audio_processing/aec3/aec3_constants.h"
-
-namespace webrtc {
-
-// Class for producing frames consisting of 1 or 2 subframes of 80 samples each
-// from 64 sample blocks. The class is designed to work together with the
-// FrameBlocker class which performs the reverse conversion. Used together with
-// that, this class produces output frames are the same rate as frames are
-// received by the FrameBlocker class. Note that the internal buffers will
-// overrun if any other rate of packets insertion is used.
-class BlockFramer {
- public:
-  explicit BlockFramer(size_t num_bands);
-  ~BlockFramer();
-  // Adds a 64 sample block into the data that will form the next output frame.
-  void InsertBlock(const std::vector<std::vector<float>>& block);
-  // Adds a 64 sample block and extracts an 80 sample subframe.
-  void InsertBlockAndExtractSubFrame(
-      const std::vector<std::vector<float>>& block,
-      std::vector<rtc::ArrayView<float>>* sub_frame);
-
- private:
-  const size_t num_bands_;
-  std::vector<std::vector<float>> buffer_;
-
-  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(BlockFramer);
-};
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_BLOCK_FRAMER_H_