Examine source code of tagtory Addon

{
  "manifest_version": 2,
  "name": "tagtory Addon",
  "description": "bookmark registration tool.",
  "version": "1.0",
  "permissions": [
    "tabs",
    "webRequest",
    "webNavigation",
    "clipboardWrite",
    "*://*/*"
  ],
  "browser_action": {
    "default_title": "ブックマーク登録 - tagtory"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "icons": {
    "16": "icon-16x16.png",
    "48": "icon-48x48.png",
    "128": "icon-128x128.png"
  }
}