vp9_write_bit_buffer: fix function name typo

vp9_rb_bytes_written -> vp9_wb_bytes_written
+ move limits.h from the header to the source file where it's needed

Change-Id: Ifcdc856b4d4dcc2fff555ef11f86c86a0d83dab3

vp9/encoder/vp9_bitstream.c

@@ -1210,7 +1210,7 @@ void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, size_t *size) {
   saved_wb = wb;
   vp9_wb_write_literal(&wb, 0, 16);  // don't know in advance first part. size
 
-  uncompressed_hdr_size = vp9_rb_bytes_written(&wb);
+  uncompressed_hdr_size = vp9_wb_bytes_written(&wb);
   data += uncompressed_hdr_size;
 
   vp9_compute_update_table();

vp9/encoder/vp9_write_bit_buffer.c

@@ -8,9 +8,10 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <limits.h>
 #include "vp9/encoder/vp9_write_bit_buffer.h"
 
-size_t vp9_rb_bytes_written(struct vp9_write_bit_buffer *wb) {
+size_t vp9_wb_bytes_written(const struct vp9_write_bit_buffer *wb) {
   return wb->bit_offset / CHAR_BIT + (wb->bit_offset % CHAR_BIT > 0);
 }
 

vp9/encoder/vp9_write_bit_buffer.h

@@ -11,8 +11,6 @@
 #ifndef VP9_ENCODER_VP9_WRITE_BIT_BUFFER_H_
 #define VP9_ENCODER_VP9_WRITE_BIT_BUFFER_H_
 
-#include <limits.h>
-
 #include "vpx/vpx_integer.h"
 
 #ifdef __cplusplus
@@ -24,7 +22,7 @@ struct vp9_write_bit_buffer {
   size_t bit_offset;
 };
 
-size_t vp9_rb_bytes_written(struct vp9_write_bit_buffer *wb);
+size_t vp9_wb_bytes_written(const struct vp9_write_bit_buffer *wb);
 
 void vp9_wb_write_bit(struct vp9_write_bit_buffer *wb, int bit);