Tests that comments in stylesheets are parsed correctly by the DevTools.

Main style:
[expanded] 
element.style { ()

[expanded] 
#main { (<style>)
/-- overloaded --/ /-- disabled --/     /* color: red; */
    color/* color: red */: /* color: red */ green /* color: red */;
/-- overloaded --/ /-- disabled --/     /* color: red; */

[expanded] 
#main { (<style>)
/-- overloaded --/ /-- disabled --/     /* color: red; */
    background /* color: red */: /* color: red */ blue /* color: red */;
/-- overloaded --/ /-- disabled --/     /* color: red; */

[expanded] 
div { (user agent stylesheet)
    display: block;
    unicode-bidi: isolate;