Move AudioDecoderIsac* to its own files

webrtc/modules/audio_coding/codecs/isac/fix/source/isac_fix_type.h

Index: webrtc/modules/audio_coding/codecs/isac/fix/source/isac_fix_type.h
diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h b/webrtc/modules/audio_coding/codecs/isac/fix/source/isac_fix_type.h
similarity index 85%
copy from webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h
copy to webrtc/modules/audio_coding/codecs/isac/fix/source/isac_fix_type.h
index 5bca23ec4e72fa8f222a86cb09386438977846b8..69c73d6904489e024c6800641ceaa2d48ac4e780 100644
--- a/webrtc/modules/audio_coding/codecs/isac/fix/interface/audio_encoder_isacfix.h
+++ b/webrtc/modules/audio_coding/codecs/isac/fix/source/isac_fix_type.h
@@ -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
@@ -8,20 +8,18 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_INTERFACE_AUDIO_ENCODER_ISACFIX_H_
-#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_INTERFACE_AUDIO_ENCODER_ISACFIX_H_
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_ISAC_FIX_TYPE_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_ISAC_FIX_TYPE_H_
 
 #include "webrtc/base/checks.h"
-#include "webrtc/base/scoped_ptr.h"
-#include "webrtc/modules/audio_coding/codecs/isac/audio_encoder_isac_t.h"
 #include "webrtc/modules/audio_coding/codecs/isac/fix/interface/isacfix.h"
 
 namespace webrtc {
 
-struct IsacFix {
-  typedef ISACFIX_MainStruct instance_type;
+class IsacFix {
+ public:
+  using instance_type = ISACFIX_MainStruct;
   static const bool has_swb = false;
-  static const uint16_t kFixSampleRate = 16000;
   static inline int16_t Control(instance_type* inst,
                                 int32_t rate,
                                 int framesize) {
@@ -96,9 +94,8 @@ struct IsacFix {
                                              uint16_t sample_rate_hz) {
     RTC_DCHECK_EQ(sample_rate_hz, kFixSampleRate);
   }
-  static inline void SetInitialBweBottleneck(
-      instance_type* inst,
-      int bottleneck_bits_per_second) {
+  static inline void SetInitialBweBottleneck(instance_type* inst,
+                                             int bottleneck_bits_per_second) {
     WebRtcIsacfix_SetInitialBweBottleneck(inst, bottleneck_bits_per_second);
   }
   static inline int16_t UpdateBwEstimate(instance_type* inst,
@@ -117,10 +114,10 @@ struct IsacFix {
   static inline int16_t SetMaxRate(instance_type* inst, int32_t max_bit_rate) {
     return WebRtcIsacfix_SetMaxRate(inst, max_bit_rate);
   }
-};
 
-using AudioEncoderIsacFix = AudioEncoderIsacT<IsacFix>;
-using AudioDecoderIsacFix = AudioDecoderIsacT<IsacFix>;
+ private:
+  enum { kFixSampleRate = 16000 };
+};
 
 }  // namespace webrtc
-#endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_INTERFACE_AUDIO_ENCODER_ISACFIX_H_
+#endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_ISAC_FIX_TYPE_H_