Examine source code of Dogear

{
  "manifest_version": 2,
  "name": "Dogear",
  "version": "1.0",
  "description": "A single place to store webpages to read.",
  "author": "Julian Herbert",
  "icons": {
    "48": "x48.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": "x32.png",
    "default_title": "Dogear",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "worker.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dogear@jweled.net"
    }
  }
}