Examine source code of Prohibition Release

{
  "manifest_version": 2,
  "name": "Prohibition Release",
  "permissions": [
    "storage"
  ],
  "version": "1.0.0",
  "description": "",
  "icons": {
    "48": "icons/icon_48.png",
    "96": "icons/icon_96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon_48.png",
      "96": "icons/icon_96.png"
    },
    "default_title": "Prohibition Release options",
    "default_popup": "options.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "prohibitionRelease.js"
      ],
      "run_at": "document_start",
      "match_about_blank": true,
      "all_frames": true
    }
  ]
}