Downstream test: include JSCS.
Downstream test: include JSCS.

Fixes #1247
Closes gh-1433

ariya/esprima,ChromeDevTools/esprima,ChromeDevTools/esprima,ChromeDevTools/esprima,ariya/esprima,jquery/esprima,bcbcarl/esprima,jquery/esprima,ariya/esprima,jquery/esprima,bcbcarl/esprima,bcbcarl/esprima