Medium - manifest chrome

manifest.json

{
    "manifest_version": 2,
    "name": "Time to go!",
    "description": "Calcule a hora de ir embora!",
    "version": "4.0",
    "icons": {
        "16": "assets/icon.png",
        "48": "assets/icon.png",
        "128": "assets/icon.png"
    },
    "browser_action": {
        "default_icon": "assets/icon.png",
        "default_popup": "index.html"
    },
    "background": {
        "scripts": ["background.js"]
    },
    "web_accessible_resources": [
        "assets/css/*",
        "assets/js/*",
        "assets/fonts/*"
    ],
    "permissions": [
        "notifications"
    ],
    "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}