hg: jdk/sandbox: Use StackWalker and checking content type after decryption

[xuelei.fan at oracle.com]

Changeset: e4fe7c97b1de
Author:    xuelei
Date:      2018-06-10 13:36 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e4fe7c97b1de

Use StackWalker and checking content type after decryption

! src/java.base/share/classes/sun/security/ssl/SSLEngineInputRecord.java
! src/java.base/share/classes/sun/security/ssl/SSLLogger.java
! src/java.base/share/classes/sun/security/ssl/SSLSocketInputRecord.java