Simply Darker

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "icons": {
    "16": "last-quarter.png",
    "32": "last-quarter.png",
    "48": "last-quarter.png",
    "128": "last-quarter.png"
  },
  "name": "Simply Darker",
  "description": "This extension darkens the pages you visit to lessen the strain on your eyes.",
  "version": "5.1",
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'",
  "browser_action": {
    "default_icon": "last-quarter.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "identity",
    "identity.email",
    "contextMenus",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "jquery-3.1.1.js",
      "utils.js",
      "background.js"
    ]
  },
  "oauth2": {
    "client_id": "797607774899-0bngjcjgv7vo3a25ddeh7h8fuad5iic6.apps.googleusercontent.com",
    "clientSecret": "u4IRGxYdUNPkKzw-2M0j9rkl",
    "scopes": [
      "profile",
      "https://www.googleapis.com/auth/userinfo.email"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "utils.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ]
}