Last modified: 2014-07-07 18:37:52 UTC
After pasting a block of <syntaxhighlight> in to a target surface, I had to save and then reload the page before the syntax highlighting styling was applied. https://www.mediawiki.org/w/index.php?title=User:TheDJ/sandbox&oldid=841358
Confirmed.
With the dependency fixed, this just needs VisualEditor loading the appropriate modules defined by SyntaxHighlight (one for each language) at appropriate times.