Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/g711/g711_interface.c

 /*
  *  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.
  */
 #include <string.h>
 #include "g711.h"
 #include "g711_interface.h"
 #include "webrtc/typedefs.h"
 
-int16_t WebRtcG711_EncodeA(const int16_t* speechIn,
-                           int16_t len,
-                           uint8_t* encoded) {
-  int n;
+size_t WebRtcG711_EncodeA(const int16_t* speechIn,
+                          size_t len,
+                          uint8_t* encoded) {
+  size_t n;
   for (n = 0; n < len; n++)
     encoded[n] = linear_to_alaw(speechIn[n]);
   return len;
 }
 
-int16_t WebRtcG711_EncodeU(const int16_t* speechIn,
-                           int16_t len,
-                           uint8_t* encoded) {
-  int n;
+size_t WebRtcG711_EncodeU(const int16_t* speechIn,
+                          size_t len,
+                          uint8_t* encoded) {
+  size_t n;
   for (n = 0; n < len; n++)
     encoded[n] = linear_to_ulaw(speechIn[n]);
   return len;
 }
 
-int16_t WebRtcG711_DecodeA(const uint8_t* encoded,
-                           int16_t len,
-                           int16_t* decoded,
-                           int16_t* speechType) {
-  int n;
+size_t WebRtcG711_DecodeA(const uint8_t* encoded,
+                          size_t len,
+                          int16_t* decoded,
+                          int16_t* speechType) {
+  size_t n;
   for (n = 0; n < len; n++)
     decoded[n] = alaw_to_linear(encoded[n]);
   *speechType = 1;
   return len;
 }
 
-int16_t WebRtcG711_DecodeU(const uint8_t* encoded,
-                           int16_t len,
-                           int16_t* decoded,
-                           int16_t* speechType) {
-  int n;
+size_t WebRtcG711_DecodeU(const uint8_t* encoded,
+                          size_t len,
+                          int16_t* decoded,
+                          int16_t* speechType) {
+  size_t n;
   for (n = 0; n < len; n++)
     decoded[n] = ulaw_to_linear(encoded[n]);
   *speechType = 1;
   return len;
 }
 
 int16_t WebRtcG711_Version(char* version, int16_t lenBytes) {
   strncpy(version, "2.0.0", lenBytes);
   return 0;
 }