Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/modules/audio_coding/codecs/ilbc/cb_update_best_index.h

 /*
  *  Copyright (c) 2011 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.
  */
 
 /******************************************************************
 
  iLBC Speech Coder ANSI-C Source Code
 
  WebRtcIlbcfix_CbUpdateBestIndex.h
 
 ******************************************************************/
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_CB_UPDATE_BEST_INDEX_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_CB_UPDATE_BEST_INDEX_H_
 
 #include "defines.h"
 
 void WebRtcIlbcfix_CbUpdateBestIndex(
     int32_t CritNew,    /* (i) New Potentially best Criteria */
     int16_t CritNewSh,   /* (i) Shift value of above Criteria */
-    int16_t IndexNew,   /* (i) Index of new Criteria */
+    size_t IndexNew,   /* (i) Index of new Criteria */
     int32_t cDotNew,    /* (i) Cross dot of new index */
     int16_t invEnergyNew,  /* (i) Inversed energy new index */
     int16_t energyShiftNew,  /* (i) Energy shifts of new index */
     int32_t *CritMax,   /* (i/o) Maximum Criteria (so far) */
     int16_t *shTotMax,   /* (i/o) Shifts of maximum criteria */
-    int16_t *bestIndex,   /* (i/o) Index that corresponds to
+    size_t *bestIndex,   /* (i/o) Index that corresponds to
                                    maximum criteria */
     int16_t *bestGain);   /* (i/o) Gain in Q14 that corresponds
                                    to maximum criteria */
 
 #endif