Fix cyclic deps: rent_a_codec<->audio_coding and rent_a_codec<->neteq

webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h

Index: webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h
diff --git a/webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h b/webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h
new file mode 100644
index 0000000000000000000000000000000000000000..6eb9300822c0e4f2f075aebdc6f0596411cccc53
--- /dev/null
+++ b/webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h
@@ -0,0 +1,56 @@
+/*
+ *  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 WEBRTC_MODULES_AUDIO_CODING_NETEQ_NETEQ_DECODER_ENUM_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_NETEQ_DECODER_ENUM_H_
+
+#include "webrtc/api/audio_codecs/audio_format.h"
+#include "webrtc/base/optional.h"
+
+namespace webrtc {
+
+enum class NetEqDecoder {
+  kDecoderPCMu,
+  kDecoderPCMa,
+  kDecoderPCMu_2ch,
+  kDecoderPCMa_2ch,
+  kDecoderILBC,
+  kDecoderISAC,
+  kDecoderISACswb,
+  kDecoderPCM16B,
+  kDecoderPCM16Bwb,
+  kDecoderPCM16Bswb32kHz,
+  kDecoderPCM16Bswb48kHz,
+  kDecoderPCM16B_2ch,
+  kDecoderPCM16Bwb_2ch,
+  kDecoderPCM16Bswb32kHz_2ch,
+  kDecoderPCM16Bswb48kHz_2ch,
+  kDecoderPCM16B_5ch,
+  kDecoderG722,
+  kDecoderG722_2ch,
+  kDecoderRED,
+  kDecoderAVT,
+  kDecoderAVT16kHz,
+  kDecoderAVT32kHz,
+  kDecoderAVT48kHz,
+  kDecoderCNGnb,
+  kDecoderCNGwb,
+  kDecoderCNGswb32kHz,
+  kDecoderCNGswb48kHz,
+  kDecoderArbitrary,
+  kDecoderOpus,
+  kDecoderOpus_2ch,
+};
+
+rtc::Optional<SdpAudioFormat> NetEqDecoderToSdpAudioFormat(NetEqDecoder nd);
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_NETEQ_DECODER_ENUM_H_