Examine source code of Tab Sessions

{
  "manifest_version": 2,
  "name": "Tab Sessions",
  "version": "1.1resigned1",
  "description": "Saves a tab session to use for later",
  "icons": {
    "48": "icons/tab-sessions-48.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/tab-sessions-48.png",
    "default_title": "Tab Sessions",
    "default_popup": "popup/choose_tab_session.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bf27680f-a5b2-4e1d-b17a-e2fdb0a6aab2}"
    }
  }
}