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

webrtc/modules/audio_processing/test/conversational_speech/settings.cc

+/*
+ *  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.
+ */
+
+#include "webrtc/modules/audio_processing/test/conversational_speech/settings.h"
+
+namespace webrtc {
+namespace test {
+
+const std::string& ConvSpeechGeneratorSettings::audiotracks_path() const {
+  return audiotracks_path_;
+}
+
+const std::string& ConvSpeechGeneratorSettings::timing_filepath() const {
+  return timing_filepath_;
+}
+
+const std::string& ConvSpeechGeneratorSettings::output_path() const {
+  return output_path_;
+}
+
+}  // namespace test
+}  // namespace webrtc