Style changes in Audio Mixer

webrtc/modules/audio_mixer/audio_mixer_defines.cc

+/*
+ *  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.
+ */
+
+#include "webrtc/modules/audio_mixer/audio_mixer_defines.h"
+
+namespace webrtc {
+
+MixerAudioSource::MixerAudioSource() : mix_history_(new NewMixHistory()) {}
+
+MixerAudioSource::~MixerAudioSource() {}
+
+bool MixerAudioSource::IsMixed() const {
+  return mix_history_->IsMixed();
+}
+
+NewMixHistory::NewMixHistory() : is_mixed_(0) {}
+
+NewMixHistory::~NewMixHistory() {}
+
+bool NewMixHistory::IsMixed() const {
+  return is_mixed_;
+}
+
+bool NewMixHistory::WasMixed() const {
+  // Was mixed is the same as is mixed depending on perspective. This function
+  // is for the perspective of NewAudioConferenceMixerImpl.
+  return IsMixed();
+}
+
+int32_t NewMixHistory::SetIsMixed(const bool mixed) {
+  is_mixed_ = mixed;
+  return 0;
+}
+
+void NewMixHistory::ResetMixedStatus() {
+  is_mixed_ = false;
+}
+
+}  // namespace webrtc