Expose OpenSSL's key_exchange_info in the content API

content/public/common/ssl_status.cc

Index: content/public/common/ssl_status.cc
diff --git a/content/public/common/ssl_status.cc b/content/public/common/ssl_status.cc
index 0ac642237fba18e930f1c37e263d5178c673cad6..eaaed4138c3c4afc88faf66d69d7cf3ca86d6322 100644
--- a/content/public/common/ssl_status.cc
+++ b/content/public/common/ssl_status.cc
@@ -13,6 +13,7 @@ SSLStatus::SSLStatus()
       cert_id(0),
       cert_status(0),
       security_bits(-1),
+      key_exchange_info(0),
       connection_status(0),
       content_status(NORMAL_CONTENT) {
 }
@@ -26,6 +27,7 @@ SSLStatus::SSLStatus(SecurityStyle security_style,
       cert_id(cert_id),
       cert_status(ssl_info.cert_status),
       security_bits(ssl_info.security_bits),
+      key_exchange_info(ssl_info.key_exchange_info),
       connection_status(ssl_info.connection_status),
       content_status(NORMAL_CONTENT),
       signed_certificate_timestamp_ids(signed_certificate_timestamp_ids) {}