Move AudioDecoderIsac* to its own files

webrtc/modules/audio_coding/neteq/audio_decoder_impl.cc

 /*
  *  Copyright (c) 2012 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_coding/neteq/audio_decoder_impl.h"
 
 #include <assert.h>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h"
 #include "webrtc/modules/audio_coding/codecs/g711/include/audio_decoder_pcm.h"
 #ifdef WEBRTC_CODEC_G722
 #include "webrtc/modules/audio_coding/codecs/g722/include/audio_decoder_g722.h"
 #endif
 #ifdef WEBRTC_CODEC_ILBC
 #include "webrtc/modules/audio_coding/codecs/ilbc/interface/audio_decoder_ilbc.h"
 #endif
 #ifdef WEBRTC_CODEC_ISACFX
+#include "webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_decoder_isacfix.h"
 #include "webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h"
 #endif
 #ifdef WEBRTC_CODEC_ISAC
+#include "webrtc/modules/audio_coding/codecs/isac/main/interface/audio_decoder_isac.h"
 #include "webrtc/modules/audio_coding/codecs/isac/main/interface/audio_encoder_isac.h"
 #endif
 #ifdef WEBRTC_CODEC_OPUS
 #include "webrtc/modules/audio_coding/codecs/opus/interface/audio_decoder_opus.h"
 #endif
 #include "webrtc/modules/audio_coding/codecs/pcm16b/include/audio_decoder_pcm16b.h"
 
 namespace webrtc {
 
 AudioDecoderCng::AudioDecoderCng() {
@@ skipping 195 matching lines @@
     case kDecoderRED:
     case kDecoderAVT:
     case kDecoderArbitrary:
     default: {
       return NULL;
     }
   }
 }
 
 }  // namespace webrtc