hg: jdk/sandbox: 8217364: Custom URLStreamHandler for jrt or file protocol can override default handler

[chris.hegarty at oracle.com]

Changeset: 0907dce4b90e
Author:    coffeys
Date:      2019-05-02 22:52 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/0907dce4b90e

8217364: Custom URLStreamHandler for jrt or file protocol can override default handler
Reviewed-by: redestad

! src/java.base/share/classes/java/net/URL.java
+ test/jdk/java/net/URL/NonOverridableHandlerFactory.java