Protect some cipher suites with ifdefs for legacy openssl compatibility.

webrtc/base/opensslstreamadapter.cc

Index: webrtc/base/opensslstreamadapter.cc
diff --git a/webrtc/base/opensslstreamadapter.cc b/webrtc/base/opensslstreamadapter.cc
index 16dd9803b4057ab5fbeb1aed4cc451b606d75969..b09c2a581e5d47fd06864fbc9381113368e52609 100644
--- a/webrtc/base/opensslstreamadapter.cc
+++ b/webrtc/base/opensslstreamadapter.cc
@@ -18,6 +18,9 @@
 #include <openssl/rand.h>
 #include <openssl/tls1.h>
 #include <openssl/x509v3.h>
+#ifndef OPENSSL_IS_BORINGSSL
+#include <openssl/dtls1.h>
+#endif
 
 #include <vector>
 
@@ -1138,7 +1141,9 @@ static const cipher_list OK_RSA_ciphers[] = {
 #ifdef TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA256
   CDEF(ECDHE_RSA_WITH_AES_256_GCM_SHA256),
 #endif
+#ifdef TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
   CDEF(ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256),
+#endif
 };
 
 static const cipher_list OK_ECDSA_ciphers[] = {
@@ -1148,7 +1153,9 @@ static const cipher_list OK_ECDSA_ciphers[] = {
 #ifdef TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA256
   CDEF(ECDHE_ECDSA_WITH_AES_256_GCM_SHA256),
 #endif
+#ifdef TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
   CDEF(ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256),
+#endif
 };
 #undef CDEF