Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.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 86 matching lines @@
  *    - nrOfSamples   : Size of speech vector
  *    - forceSID      : not zero to force SID frame and reset
  *
  * Output:
  *    - bytesOut      : Nr of bytes to transmit, might be 0
  *
  * Return value       :  0 - Ok
  *                      -1 - Error
  */
 int WebRtcCng_Encode(CNG_enc_inst* cng_inst, int16_t* speech,
-                     int16_t nrOfSamples, uint8_t* SIDdata,
-                     int16_t* bytesOut, int16_t forceSID);
+                     size_t nrOfSamples, uint8_t* SIDdata,
+                     size_t* bytesOut, int16_t forceSID);
 
 /****************************************************************************
  * WebRtcCng_UpdateSid(...)
  *
  * These functions updates the CN state, when a new SID packet arrives
  *
  * Input:
  *    - cng_inst      : Pointer to created instance that should be freed
  *    - SID           : SID packet, all headers removed
  *    - length        : Length in bytes of SID packet
@@ skipping 12 matching lines @@
  * Input:
  *    - cng_inst      : Pointer to created instance that should be freed
  *    - outData       : pointer to area to write CN data
  *    - nrOfSamples   : How much data to generate
  *    - new_period    : >0 if a new period of CNG, will reset history
  *
  * Return value       :  0 - Ok
  *                      -1 - Error
  */
 int16_t WebRtcCng_Generate(CNG_dec_inst* cng_inst, int16_t* outData,
-                           int16_t nrOfSamples, int16_t new_period);
+                           size_t nrOfSamples, int16_t new_period);
 
 /*****************************************************************************
  * WebRtcCng_GetErrorCodeEnc/Dec(...)
  *
  * This functions can be used to check the error code of a CNG instance. When
  * a function returns -1 a error code will be set for that instance. The 
  * function below extract the code of the last error that occurred in the
  * specified instance.
  *
  * Input:
  *    - CNG_inst    : CNG enc/dec instance
  *
  * Return value     : Error code
  */
 int16_t WebRtcCng_GetErrorCodeEnc(CNG_enc_inst* cng_inst);
 int16_t WebRtcCng_GetErrorCodeDec(CNG_dec_inst* cng_inst);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INTERFACE_WEBRTC_CNG_H_