external/boringssl: Sync to 9bbdf5832de8a2d395303c669b594fc61c791f4d.

This includes the following changes:

https://boringssl.googlesource.com/boringssl/+log/c642aca28feb7e18f244658559f4042286aed0c8..9bbdf5832de8a2d395303c669b594fc61c791f4d

Test: BoringSSL CTS Presubmits.
Change-Id: Ieb6fcfee99c4cc496b2f6e1d3e6597784bd80189
diff --git a/src/include/openssl/buf.h b/src/include/openssl/buf.h
index 30f3af7..013c546 100644
--- a/src/include/openssl/buf.h
+++ b/src/include/openssl/buf.h
@@ -91,7 +91,7 @@
 
 /* BUF_MEM_grow_clean acts the same as |BUF_MEM_grow|, but clears the previous
  * contents of memory if reallocing. */
-OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
+OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
 
 /* BUF_strdup returns an allocated, duplicate of |str|. */
 OPENSSL_EXPORT char *BUF_strdup(const char *str);
@@ -112,7 +112,7 @@
 OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
 
 /* BUF_strlcat acts like strlcat(3). */
-OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t size);
+OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size);
 
 
 #if defined(__cplusplus)