BrowserVersion: update Chrome details, and include chrome as part of the sample code usage.

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9715 5f5364db-9458-4db8-a492-e30667be6df6
fix javadoc warnings

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9716 5f5364db-9458-4db8-a492-e30667be6df6