SumThing

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "SumThing",
  "version": "1.0.3",
  "version_name": "1.0.3",
  "description": "Calculate sums of cells instantly.",
  "icons": {
    "128": "/img/logo.png"
  },
  "browser_action": {
    "default_icon": "/img/logo_grey_16.png"
  },
  "background": {
    "scripts": [
      "/lib/jquery.min.js",
      "/lib/webx.js",
      "/lib/mixpanel.js",
      "/js/background/background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "activeTab",
    "http://*/*",
    "https://*/*",
    "storage"
  ],
  "web_accessible_resources": [
    "/*"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}