Uncaught TypeError: undefined is not a function

chrome.contextMenus.create({
  id:"click-me",
  title: "click-me",
  contexts : ["all"]
});

chrome.contextMenus.onClicked.AddListener(function(info, tab){
    alert("A context menu entry has been clicked: " + info.menuItemId);
});

{
  "manifest_version" : 2,
  "name": "Sample",
  "version": "1.0",
  "icons" : {
    "128" : "128.png"
  },
  "background" : {
    "scripts" : ["background.js"],
    "persistent" : false
  },
  "permissions":[
    "contextMenus",
    "tabs"
  ],
  "browser_action" : {
    "default_icon" : {
      "128" : "128.png"
    }
  }
}