Examine source code of BuddyPassword

{
  "manifest_version": 2,
  "name": "BuddyPassword",
  "description": "Save your password in the cloud",
  "version": "1.0.1",
  "permissions": [
    "storage",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "https://*/*",
    "<all_urls>",
    "cookies"
  ],
  "browser_action": {
    "default_icon": "icon/icon-64.png",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "settings/settings.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "32": "icon/icon-32.png",
    "64": "icon/icon-64.png",
    "128": "icon/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cda25df2-224b-49a7-b4a5-a20393df2294}"
    }
  }
}