Revert "Upconvert various types to int."

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

 /*
  *  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.
  */
 
@@ skipping 14 matching lines @@
 extern "C" {
 #endif
 
 int WebRtcIsacfix_EstimateBandwidth(BwEstimatorstr* bwest_str,
                                     Bitstr_dec* streamdata,
                                     int32_t packet_size,
                                     uint16_t rtp_seq_number,
                                     uint32_t send_ts,
                                     uint32_t arr_ts);
 
-int WebRtcIsacfix_DecodeImpl(int16_t* signal_out16,
-                             IsacFixDecoderInstance* ISACdec_obj,
-                             int16_t* current_framesamples);
+int16_t WebRtcIsacfix_DecodeImpl(int16_t* signal_out16,
+                                       IsacFixDecoderInstance* ISACdec_obj,
+                                       int16_t* current_framesamples);
 
 int16_t WebRtcIsacfix_DecodePlcImpl(int16_t* decoded,
                                     IsacFixDecoderInstance* ISACdec_obj,
                                     int16_t* current_framesample );
 
 int WebRtcIsacfix_EncodeImpl(int16_t* in,
                              IsacFixEncoderInstance* ISACenc_obj,
                              BwEstimatorstr* bw_estimatordata,
                              int16_t CodingMode);
 
@@ skipping 171 matching lines @@
                                 int32_t* ptr0,
                                 int32_t* ptr1,
                                 int32_t* ptr2);
 extern FilterMaLoopFix WebRtcIsacfix_FilterMaLoopFix;
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_CODEC_H_ */