[9] Review request: 8176404: Remove public test-only convenience method from CssParser

[Kevin Rushforth]

Hi Jonathan,

Please review the following to remove a method that was mistakenly made 
public when the CssParser, etc., classes were added as public API as 
part of JEP 253:

https://bugs.openjdk.java.net/browse/JDK-8176404
http://cr.openjdk.java.net/~kcr/8176404/webrev.00/

Details are in JBS.

-- Kevin