Examine source code of SpeedTube

{
  "browser_specific_settings": {
    "gecko": {
      "id": "hilan.snd@gmail.com111",
      "strict_min_version": "57.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "script/scpg.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "96": "popup/icons/button/2111.png"
    },
    "default_title": "SpeedTube",
    "default_popup": "popup/geo.html"
  },
  "description": "SpeedTube",
  "manifest_version": 2,
  "name": "SpeedTube",
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "version": "0.6"
}