I think i found your mistake. I just downloaded your setup via github and this line had a typo in your .vimrc file:
let g:syntastic_javascript_closure_compiler_path = '~/.vim/closure-compier/compiler.jar'
When I changed this line to this:
let g:syntastic_javascript_closure_compiler_path = '~/.vim/closure-compiler/compiler.jar'
And launched gvim abc.js I get this:
Seems to be working now.