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

webrtc/modules/audio_coding/codecs/isac/fix/source/pitch_filter_mips.c

 /*
  *  Copyright (c) 2014 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/codecs/isac/fix/source/pitch_estimator.h"
 
 void WebRtcIsacfix_PitchFilterCore(int loopNumber,
                                    int16_t gain,
-                                   int index,
+                                   size_t index,
                                    int16_t sign,
                                    int16_t* inputState,
                                    int16_t* outputBuf2,
                                    const int16_t* coefficient,
                                    int16_t* inputBuf,
                                    int16_t* outputBuf,
                                    int* index2) {
   int ind2t = *index2;
   int i = 0;
   int16_t* out2_pos2 = &outputBuf2[PITCH_BUFFSIZE - (index + 2)] + ind2t;
@@ skipping 98 matching lines @@
       : [coefficient] "r" (coefficient), [inputState] "r" (inputState),
         [gain32] "r" (gain32), [sign32] "r" (sign32), [kDampF0] "r" (kDampF0),
         [kDampF1] "r" (kDampF1), [kDampF2] "r" (kDampF2),
         [coef1] "r" (coef1), [coef2] "r" (coef2), [coef3] "r" (coef3),
         [coef4] "r" (coef4), [coef5] "r" (coef5)
       : "hi", "lo", "$ac1hi", "$ac1lo", "memory"
     );
   }
   (*index2) += loopNumber;
 }