Chrome Extension shortcut menu extension

Question

I need to make a context menu option to search for the selected text or link. I need to be able to display text or a link in the context menu header, but only the selected text can be displayed. How can I display the link url in the title of a menu item?

the code:

function searchGoogle(info, tab) {
    chrome.tabs.create({
        url: "http://www.google.com/search?q=" + info.selectionText,
    });
}

chrome.contextMenus.create({
    title: "Search %s", //I want to display selection AND link url
    contexts:["link", "selection"],
});