manifest - Why does my chrome extension ask for history permissions? -

in manifest.json file, have nothing explicitly listed reading user's history, however, warning comes when try install extension.

here manifest file:

{   "manifest_version": 2,    "name": "queuetube youtube!",    "short_name": "queuetube",    "description": "search youtube without stopping video, , make own playlists!",   "version": "1.5",   "author": "dara javaherian",    "permissions": ["tabs", "*://*.youtube.com/*"],    "background": {     "persistent":true,     "scripts": [       "bg/socket.io.js",       "bg/background.js"     ]   },   "icons": {     "128": "icons/youtube-128.png"   },   "browser_action": {     "default_icon": "icons/icon.png",     "default_popup": "popup/popup.html"   },   "web_accessible_resources": [     "spinner.gif"   ],   "content_scripts" : [{     "matches" :        ["https://www.youtube.com/*",       "http://www.youtube.com/*"],     "js" : [       "js/jquery.js",       "js/inject.js"],     "css" : ["styles/styles.css"]   }] } 

does know why permission showing up?

this standard warning "tabs" permission.

it allows query, , notified of changes, urls of tabs. allows spy on user's history in real time - if don't have access browser's own history log.

note "tabs" permission is not required in cases. providing access urls reason include it. can use of tabs api without it, , can access current tab without warning using the "activetab" permission.