Move AudioDecoderIsac* to its own files

webrtc/modules/audio_coding/codecs/isac/fix/source/audio_decoder_isacfix.cc

Index: webrtc/modules/audio_coding/codecs/isac/fix/source/audio_decoder_isacfix.cc
diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/source/audio_encoder_isacfix.cc b/webrtc/modules/audio_coding/codecs/isac/fix/source/audio_decoder_isacfix.cc
similarity index 69%
copy from webrtc/modules/audio_coding/codecs/isac/fix/source/audio_encoder_isacfix.cc
copy to webrtc/modules/audio_coding/codecs/isac/fix/source/audio_decoder_isacfix.cc
index 9b2f3174b890e3bd23f3f6308958fbf19cff0f83..8b4741b2cb9405808d7cb07ec1bcf94a75a3a041 100644
--- a/webrtc/modules/audio_coding/codecs/isac/fix/source/audio_encoder_isacfix.cc
+++ b/webrtc/modules/audio_coding/codecs/isac/fix/source/audio_decoder_isacfix.cc
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *  Copyright (c) 2015 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
@@ -8,16 +8,13 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h"
+#include "webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_decoder_isacfix.h"
 
-#include "webrtc/modules/audio_coding/codecs/isac/audio_encoder_isac_t_impl.h"
+#include "webrtc/modules/audio_coding/codecs/isac/audio_decoder_isac_t_impl.h"
 
 namespace webrtc {
 
-const uint16_t IsacFix::kFixSampleRate;
-
 // Explicit instantiation:
-template class AudioEncoderIsacT<IsacFix>;
 template class AudioDecoderIsacT<IsacFix>;
 
 }  // namespace webrtc