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diff --git a/webrtc/modules/audio_processing/beamformer/covariance_matrix_generator.h b/webrtc/modules/audio_processing/beamformer/covariance_matrix_generator.h
deleted file mode 100644
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--- a/webrtc/modules/audio_processing/beamformer/covariance_matrix_generator.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- *  Copyright (c) 2014 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_BEAMFORMER_COVARIANCE_MATRIX_GENERATOR_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_BEAMFORMER_COVARIANCE_MATRIX_GENERATOR_H_
-
-#include "webrtc/modules/audio_processing/beamformer/complex_matrix.h"
-#include "webrtc/modules/audio_processing/beamformer/array_util.h"
-
-namespace webrtc {
-
-// Helper class for Beamformer in charge of generating covariance matrices. For
-// each function, the passed-in ComplexMatrix is expected to be of size
-// |num_input_channels| x |num_input_channels|.
-class CovarianceMatrixGenerator {
- public:
-  // A uniform covariance matrix with a gap at the target location. WARNING:
-  // The target angle is assumed to be 0.
-  static void UniformCovarianceMatrix(float wave_number,
-                                      const std::vector<Point>& geometry,
-                                      ComplexMatrix<float>* mat);
-
-  // The covariance matrix of a source at the given angle.
-  static void AngledCovarianceMatrix(float sound_speed,
-                                     float angle,
-                                     size_t frequency_bin,
-                                     size_t fft_size,
-                                     size_t num_freq_bins,
-                                     int sample_rate,
-                                     const std::vector<Point>& geometry,
-                                     ComplexMatrix<float>* mat);
-
-  // Calculates phase shifts that, when applied to a multichannel signal and
-  // added together, cause constructive interferernce for sources located at
-  // the given angle.
-  static void PhaseAlignmentMasks(size_t frequency_bin,
-                                  size_t fft_size,
-                                  int sample_rate,
-                                  float sound_speed,
-                                  const std::vector<Point>& geometry,
-                                  float angle,
-                                  ComplexMatrix<float>* mat);
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_BEAMFORMER_BF_HELPERS_H_