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diff --git a/third_party/libwebrtc/modules/audio_processing/test/conversational_speech/wavreader_abstract_factory.h b/third_party/libwebrtc/modules/audio_processing/test/conversational_speech/wavreader_abstract_factory.h
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+++ b/third_party/libwebrtc/modules/audio_processing/test/conversational_speech/wavreader_abstract_factory.h
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2017 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 MODULES_AUDIO_PROCESSING_TEST_CONVERSATIONAL_SPEECH_WAVREADER_ABSTRACT_FACTORY_H_
+#define MODULES_AUDIO_PROCESSING_TEST_CONVERSATIONAL_SPEECH_WAVREADER_ABSTRACT_FACTORY_H_
+
+#include <memory>
+
+#include "absl/strings/string_view.h"
+#include "modules/audio_processing/test/conversational_speech/wavreader_interface.h"
+
+namespace webrtc {
+namespace test {
+namespace conversational_speech {
+
+class WavReaderAbstractFactory {
+ public:
+  virtual ~WavReaderAbstractFactory() = default;
+  virtual std::unique_ptr<WavReaderInterface> Create(
+      absl::string_view filepath) const = 0;
+};
+
+}  // namespace conversational_speech
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // MODULES_AUDIO_PROCESSING_TEST_CONVERSATIONAL_SPEECH_WAVREADER_ABSTRACT_FACTORY_H_