chrome.runtime.onMessage.addListener(function(request, sender, sendResponse){
if(request.todo == "CaptureAds"){
    frames = $('iframe')
    for(var iter=0;iter<frames.length;iter++){
        console.log('==================IFRAME====================')
        console.log('A')
        console.log(frames[iter])
        console.log('B')
        console.log(frames[iter].contentDocument)
        console.log('C')
        console.log(frames[iter].src)
    }
}