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

webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c

Index: webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c b/webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
index dbecc33abe69015a8a25eaaa274722c4c887a846..dc12a5a7c43ff186a0090767b1d156577842da89 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
@@ -26,9 +26,9 @@ void WebRtcIlbcfix_Window32W32(
     int32_t *z,    /* Output */
     int32_t *x,    /* Input (same domain as Output)*/
     const int32_t  *y,  /* Q31 Window */
-    int16_t N     /* length to process */
+    size_t N     /* length to process */
                                ) {
-  int16_t i;
+  size_t i;
   int16_t x_low, x_hi, y_low, y_hi;
   int16_t left_shifts;
   int32_t temp;