manifest.json

{
  "manifest_version": 2,
  "background": {
      "page": "background.html"
  },
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "1.2.0.1",
  "permissions": [
    "notifications",
	"unlimitedStorage",
    "identity",
	"*://*.youtube.com/*",
    "*://*.ytimg.com/*",
    "*://yt3.ggpht.com/*"
  ],
  "browser_action": {
    "default_icon": "img/48.png",
    "default_popup": "settings.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
	  ],
	  "js": [ "js/jquery.min.js", "js/content_script.js" ]
	}
  ],
  "default_locale": "en",
   "icons": {
      "16": "img/16.png",
      "48": "img/48.png",
      "128": "img/128.png"
   },
   "oauth2": {
    "client_id": "836337899077-k426d78agmgff3l32a29c4lalg0tb0q1.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/youtube.readonly",
	  "https://www.googleapis.com/auth/youtube.force-ssl"
    ]
  }
}