Reland "C++ porting of the initial python script for conversational speech generation."

webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py

Index: webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
diff --git a/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py b/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
deleted file mode 100644
index 3fc34e399d11c620dfb9ab4b80105118305d6e45..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_processing/test/py_conversational_speech/test_generation.py
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env python
-# 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.
-
-import unittest
-
-import generate_conversational_tracks
-
-class TestGenerationScript(unittest.TestCase):
-
-  def TestMain(self):
-    # Exit with error code if no arguments are passed.
-    with self.assertRaises(SystemExit) as cm:
-      generate_conversational_tracks.main()
-    self.assertGreater(cm.exception.code, 0)