Examine source code of Sessions

{
  "manifest_version": 2,
  "name": "Sessions",
  "description": "Schedule or instantly start online meetings through the Sessions Browser extension.",
  "version": "1.0.1",
  "browser_action": {
    "default_icon": {
      "16": "icon-16.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/vendor.js",
        "js/content_script.js",
        "js/presence.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/vendor.js",
      "js/background.js"
    ]
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "management",
    "tabs",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d3895f3-acf5-46fd-841e-397aabaed9a7}"
    }
  }
}