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

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

Index: webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h b/webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h
index 493496848ea75a4b372720d47e7853453d73b922..be0b121abbc4a7baa9af9cc3b362c3a3d87ec198 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h
+++ b/webrtc/modules/audio_coding/codecs/ilbc/interface/ilbc.h
@@ -18,6 +18,8 @@
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_INTERFACE_ILBC_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_INTERFACE_ILBC_H_
 
+#include <stddef.h>
+
 /*
  * Define the fixpoint numeric formats
  */
@@ -137,7 +139,7 @@ extern "C" {
 
   int WebRtcIlbcfix_Encode(IlbcEncoderInstance *iLBCenc_inst,
                            const int16_t *speechIn,
-                           int16_t len,
+                           size_t len,
                            uint8_t* encoded);
 
   /****************************************************************************
@@ -182,17 +184,17 @@ extern "C" {
 
   int WebRtcIlbcfix_Decode(IlbcDecoderInstance* iLBCdec_inst,
                            const uint8_t* encoded,
-                           int16_t len,
+                           size_t len,
                            int16_t* decoded,
                            int16_t* speechType);
   int WebRtcIlbcfix_Decode20Ms(IlbcDecoderInstance* iLBCdec_inst,
                                const uint8_t* encoded,
-                               int16_t len,
+                               size_t len,
                                int16_t* decoded,
                                int16_t* speechType);
   int WebRtcIlbcfix_Decode30Ms(IlbcDecoderInstance* iLBCdec_inst,
                                const uint8_t* encoded,
-                               int16_t len,
+                               size_t len,
                                int16_t* decoded,
                                int16_t* speechType);
 
@@ -210,13 +212,12 @@ extern "C" {
    * Output:
    *      - decoded           : The "decoded" vector
    *
-   * Return value             : >0 - Samples in decoded PLC vector
-   *                            -1 - Error
+   * Return value             : Samples in decoded PLC vector
    */
 
-  int16_t WebRtcIlbcfix_DecodePlc(IlbcDecoderInstance *iLBCdec_inst,
-                                  int16_t *decoded,
-                                  int16_t noOfLostFrames);
+  size_t WebRtcIlbcfix_DecodePlc(IlbcDecoderInstance *iLBCdec_inst,
+                                 int16_t *decoded,
+                                 size_t noOfLostFrames);
 
   /****************************************************************************
    * WebRtcIlbcfix_NetEqPlc(...)
@@ -232,13 +233,12 @@ extern "C" {
    * Output:
    *      - decoded           : The "decoded" vector (nothing in this case)
    *
-   * Return value             : >0 - Samples in decoded PLC vector
-   *                            -1 - Error
+   * Return value             : Samples in decoded PLC vector
    */
 
-  int16_t WebRtcIlbcfix_NetEqPlc(IlbcDecoderInstance *iLBCdec_inst,
-                                 int16_t *decoded,
-                                 int16_t noOfLostFrames);
+  size_t WebRtcIlbcfix_NetEqPlc(IlbcDecoderInstance *iLBCdec_inst,
+                                int16_t *decoded,
+                                size_t noOfLostFrames);
 
   /****************************************************************************
    * WebRtcIlbcfix_version(...)