題外話:不明白阿...剛剛才發現昨天的文章竟然沒有成功發佈...整個前功盡棄了
manifest.json

{
   "manifest_version": 2,
   "name": "ironman6",
   "version": "1.0",
   "background": {
      "scripts": ["background.js"]
   },
   "omnibox": {
      "keyword" : "ironman6"
   }
}

background.js

chrome.omnibox.onInputChanged.addListener(function(text, suggest) {
    suggest([
        {content: "1. " + text, description: "Input  : " + text},
        {content: "2. " + text, description: "Base64 : " + btoa(text)}
    ]);
});

chrome.omnibox.onInputEntered.addListener(function(text){
    alert(text);
});