There are some regression tests depending on sun.net.www.MessageHeader, the internal API dependency should be removed:
test/jdk/java/net/Authenticator/B6870935.java
test/jdk/java/net/Socket/HttpProxy.java
test/jdk/java/net/httpclient/ProxyAuthTest.java
test/jdk/sun/net/www/protocol/http/DigestTest.java
test/jdk/sun/net/www/protocol/http/NTLMHeadTest.java
test/jdk/sun/net/www/protocol/http/ProxyTunnelServer.java
test/jdk/sun/net/www/protocol/http/TunnelThroughProxy.java
test/jdk/sun/net/www/protocol/https/HttpsClient/ProxyAuthTest.java
test/jdk/sun/net/www/protocol/https/HttpsClient/ProxyTunnelServer.java
test/jdk/sun/net/www/protocol/https/HttpsURLConnection/ProxyTunnelServer.java
test/jdk/sun/security/ssl/InputRecord/ClientHelloRead.java
test/jdk/sun/security/ssl/InputRecord/ProxyTunnelServer.java
test/jdk/java/net/Authenticator/B6870935.java
test/jdk/java/net/Socket/HttpProxy.java
test/jdk/java/net/httpclient/ProxyAuthTest.java
test/jdk/sun/net/www/protocol/http/DigestTest.java
test/jdk/sun/net/www/protocol/http/NTLMHeadTest.java
test/jdk/sun/net/www/protocol/http/ProxyTunnelServer.java
test/jdk/sun/net/www/protocol/http/TunnelThroughProxy.java
test/jdk/sun/net/www/protocol/https/HttpsClient/ProxyAuthTest.java
test/jdk/sun/net/www/protocol/https/HttpsClient/ProxyTunnelServer.java
test/jdk/sun/net/www/protocol/https/HttpsURLConnection/ProxyTunnelServer.java
test/jdk/sun/security/ssl/InputRecord/ClientHelloRead.java
test/jdk/sun/security/ssl/InputRecord/ProxyTunnelServer.java