Delete bundled copy of OpenSSL and replace with README.

patches.chromium/0009-stricter_cutthrough.patch

-diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
-index e47eef1..d1b3224 100644
---- a/ssl/s3_clnt.c
-+++ b/ssl/s3_clnt.c
-@@ -557,7 +557,8 @@ int ssl3_connect(SSL *s)
-                                }
-                        else
-                                {
--                               if ((SSL_get_mode(s) & SSL_MODE_HANDSHAKE_CUTTHROUGH) && SSL_get_cipher_bits(s, NULL) >= 128
-+                               if ((SSL_get_mode(s) & SSL_MODE_HANDSHAKE_CUTTHROUGH)
-+                                   && ssl3_can_cutthrough(s)
-                                    && s->s3->previous_server_finished_len == 0 /* no cutthrough on renegotiation (would complicate the state machine) */
-                                   )
-                                        {
-diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
-index 45a76ae..d75b9f7 100644
---- a/ssl/ssl_lib.c
-+++ b/ssl/ssl_lib.c
-@@ -3305,12 +3305,39 @@ int SSL_cutthrough_complete(const SSL *s)
-                s->version >= SSL3_VERSION &&
-                s->s3->in_read_app_data == 0 &&   /* cutthrough only applies to write() */
-                (SSL_get_mode((SSL*)s) & SSL_MODE_HANDSHAKE_CUTTHROUGH) &&  /* cutthrough enabled */
--               SSL_get_cipher_bits(s, NULL) >= 128 &&                      /* strong cipher choosen */
-+               ssl3_can_cutthrough(s) &&                                   /* cutthrough allowed */
-                s->s3->previous_server_finished_len == 0 &&                 /* not a renegotiation handshake */
-                (s->state == SSL3_ST_CR_SESSION_TICKET_A ||                 /* ready to write app-data*/
-                        s->state == SSL3_ST_CR_FINISHED_A));
-        }
- 
-+int ssl3_can_cutthrough(const SSL *s)
-+       {
-+       const SSL_CIPHER *c;
-+
-+       /* require a strong enough cipher */
-+       if (SSL_get_cipher_bits(s, NULL) < 128)
-+               return 0;
-+
-+       /* require NPN extension */
-+#ifndef OPENSSL_NO_NEXTPROTONEG
-+       if (!s->s3->next_proto_neg_seen)
-+               return 0;
-+#else
-+       return 0;
-+#endif
-+
-+       /* require a forward-secret cipher */
-+       c = SSL_get_current_cipher(s);
-+       if (!c || (c->algorithm_mkey != SSL_kEDH &&
-+                       c->algorithm_mkey != SSL_kEECDH))
-+               {
-+               return 0;
-+               }
-+
-+       return 1;
-+       }
-+
- /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
-  * vairable, freeing  EVP_MD_CTX previously stored in that variable, if
-  * any. If EVP_MD pointer is passed, initializes ctx with this md
-diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h
-index 2f8cda8..3732825 100644
---- a/ssl/ssl_locl.h
-+++ b/ssl/ssl_locl.h
-@@ -1160,6 +1160,8 @@ const EVP_MD *tls12_get_hash(unsigned char hash_alg);
- int tls1_channel_id_hash(EVP_MD_CTX *ctx, SSL *s);
- #endif
- 
-+int ssl3_can_cutthrough(const SSL *s);
-+
- EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) ;
- void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
- int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,