Examine source code of YT Redirect

{
  "manifest_version": 2,
  "name": "YT Redirect",
  "version": "1.1",
  "description": "This redirects you after clicking on a youtube video to a service of your choice. This lets you keep your youtube recommendations.",
  "icons": {
    "48": "icons/redr-48.png",
    "96": "icons/redr-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main/yt-redirect.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "main/background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "icons/redr-48.png"
    },
    "default_title": "YT Redirect",
    "default_popup": "main/popup.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f47d9368-952e-4b54-9b40-42790ef11d31}"
    }
  }
}