在使用者按下"授權"後, 才跳出警告視窗, 當然也能再次取消(移除)授權.
在一些非核心的功能上採取這樣的方式, 可以減少使用者不必要的擔心.
manifest.json

{
   "manifest_version": 2,
   "name": "ironman6",
   "version": "1.0",     
   "browser_action": {    
      "default_popup": "index.html"    
   },
   "optional_permissions": [
      "background",
      "bookmarks",
      "clipboardRead",
      "clipboardWrite",
      "contentSettings",
      "contextMenus",
      "cookies",
      "debugger",
      "history",
      "idle",
      "management",
      "notifications",
      "pageCapture",
      "tabs",
      "topSites",
      "webNavigation",
      "webRequest",
      "webRequestBlocking"
   ]
}

index.html

        <title>ironman6</title>
		<meta charset="utf-8">
        <style>body {width: 500px;}</style> 
    
    
    	<table id="content"></table>
        <script src="app.js"></script>
    

app.js

var permissionsList = [
  "background",
  "bookmarks",
  "clipboardRead",
  "clipboardWrite",
  "contentSettings",
  "contextMenus",
  "cookies",
  "debugger",
  "history",
  "idle",
  "management",
  "notifications",
  "pageCapture",
  "tabs",
  "topSites",
  "webNavigation",
  "webRequest",
  "webRequestBlocking"
];

var output  = [];
var content = document.querySelector('#content');

for (var i = 0; i < permissionsList.length; i++) {
	var permissions = permissionsList[i];
	output.push('<tr class="' + permissions + '">');
	output.push('<td>' + permissions + '</td>');
	output.push('<td><button data-item="' + permissions + '" class="request">授權</button></td>');
	output.push('<td><button data-item="' + permissions + '" class="remove">移除</button></td>');
	output.push('</tr>');
}
content.innerHTML = output.join('');

var request = document.querySelectorAll('.request');
var remove  = document.querySelectorAll('.remove');

for (var i = 0; i < permissionsList.length; i++) {
	var permissions = permissionsList[i];
	Contains(permissions);
	request[i].addEventListener('click', Request);
	remove[i].addEventListener('click', Remove);
}

function Request(){
	var item = this.dataset.item;
	chrome.permissions.request({
			permissions: [item]
		}, function(granted) {
			console.dir(granted);
			if (granted) {
				document.querySelector('.' + item).style.color = 'blue';
			}
	});
}

function Remove(){
	var item = this.dataset.item;
	chrome.permissions.remove({
			permissions: [item]
		}, function(removed) {
			if (removed) {
				document.querySelector('.' + item).style.color = '';
			}
	});
}

function Contains(permissions){
	chrome.permissions.contains({
		permissions: [permissions]
	}, function(result) {
		if (result) {
			document.querySelector('.' + permissions).style.color = 'blue';
		} else {
			document.querySelector('.' + permissions).style.color = '';
		}
	});
}