Checks that async stack is captured when Runtime.setAsyncCallStackDepth is called with an argument greater than zero.
{
    callFrames : [
        [0] : {
            columnNumber : 8
            functionName : 
            lineNumber : 0
            scriptId : <scriptId>
            url : 
        }
    ]
    parent : {
        callFrames : [
            [0] : {
                columnNumber : 2
                functionName : test
                lineNumber : 2
                scriptId : <scriptId>
                url : test.js
            }
            [1] : {
                columnNumber : 0
                functionName : 
                lineNumber : 0
                scriptId : <scriptId>
                url : expr.js
            }
        ]
        description : setTimeout
    }
}
