I was actually looking to get the content of clipboard using angular JS to simulate a copy paste thing.
BTW, if using Angular to copy to clipboard with a Chrome Packaged App, do the following:
Put a function in your controller like:
$scope.copyUrlToClipboard = function(url) {
var copyFrom = document.createElement("textarea");
copyFrom.textContent = url;
var body = document.getElementsByTagName('body')[0];
body.appendChild(copyFrom);
copyFrom.select();
document.execCommand('copy');
body.removeChild(copyFrom);
this.flashMessage('over5');
}