external/boringssl: Sync to f21650709a6f76e829ddcc77fe221c9d6a5c12de.

This includes the following changes:

https://boringssl.googlesource.com/boringssl/+log/348f0d8db9c2a0eca0503ba654020209c579d552..f21650709a6f76e829ddcc77fe221c9d6a5c12de

Test: BoringSSL CTS Presubmits.
Change-Id: Ie6e99c3315c552068b5ea57e31b1af7ff94f9b0f
diff --git a/src/include/openssl/pkcs7.h b/src/include/openssl/pkcs7.h
index eaba29e..d708141 100644
--- a/src/include/openssl/pkcs7.h
+++ b/src/include/openssl/pkcs7.h
@@ -24,54 +24,54 @@
 #endif
 
 
-/* PKCS#7.
- *
- * This library contains functions for extracting information from PKCS#7
- * structures (RFC 2315). */
+// PKCS#7.
+//
+// This library contains functions for extracting information from PKCS#7
+// structures (RFC 2315).
 
 DECLARE_STACK_OF(CRYPTO_BUFFER)
 DECLARE_STACK_OF(X509)
 DECLARE_STACK_OF(X509_CRL)
 
-/* PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
- * and appends the included certificates to |out_certs|. It returns one on
- * success and zero on error. */
+// PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
+// and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error.
 OPENSSL_EXPORT int PKCS7_get_raw_certificates(
     STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs, CRYPTO_BUFFER_POOL *pool);
 
-/* PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
- * them into |X509| objects. */
+// PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
+// them into |X509| objects.
 OPENSSL_EXPORT int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs);
 
-/* PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
- * |certs| to |out|. It returns one on success and zero on error. */
+// PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
+// |certs| to |out|. It returns one on success and zero on error.
 OPENSSL_EXPORT int PKCS7_bundle_certificates(
     CBB *out, const STACK_OF(X509) *certs);
 
-/* PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
- * the included CRLs to |out_crls|. It returns one on success and zero on
- * error. */
+// PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
+// the included CRLs to |out_crls|. It returns one on success and zero on
+// error.
 OPENSSL_EXPORT int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs);
 
-/* PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
- * |crls| to |out|. It returns one on success and zero on error. */
+// PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
+// |crls| to |out|. It returns one on success and zero on error.
 OPENSSL_EXPORT int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls);
 
-/* PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
- * from |pem_bio| and appends the included certificates to |out_certs|. It
- * returns one on success and zero on error. */
+// PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
+// from |pem_bio| and appends the included certificates to |out_certs|. It
+// returns one on success and zero on error.
 OPENSSL_EXPORT int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs,
                                               BIO *pem_bio);
 
-/* PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
- * |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
- * success and zero on error. */
+// PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
+// |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
+// success and zero on error.
 OPENSSL_EXPORT int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls,
                                       BIO *pem_bio);
 
 
 #if defined(__cplusplus)
-}  /* extern C */
+}  // extern C
 #endif
 
 #define PKCS7_R_BAD_PKCS7_VERSION 100
@@ -79,4 +79,4 @@
 #define PKCS7_R_NO_CERTIFICATES_INCLUDED 102
 #define PKCS7_R_NO_CRLS_INCLUDED 103
 
-#endif  /* OPENSSL_HEADER_PKCS7_H */
+#endif  // OPENSSL_HEADER_PKCS7_H