Examine source code of iconLake

{
  "name": "iconLake",
  "description": "iconLake Extension",
  "version": "0.7.0",
  "manifest_version": 2,
  "icons": {
    "16": "images/logo-16.png",
    "32": "images/logo-32.png",
    "48": "images/logo-48.png",
    "64": "images/logo-64.png",
    "128": "images/logo-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "assets/browser-polyfill.min.js",
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/logo-16.png",
      "32": "images/logo-32.png",
      "48": "images/logo-48.png",
      "64": "images/logo-64.png",
      "128": "images/logo-128.png"
    }
  },
  "options_page": "options.html",
  "permissions": [
    "tabs",
    "declarativeNetRequestFeedback",
    "declarativeNetRequestWithHostAccess",
    "storage",
    "cookies",
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fe30b37c-9301-48d9-8f9e-726ccadae347}"
    }
  }
}