Examine source code of ClickLater

{
  "manifest_version": 2,
  "name": "ClickLater",
  "version": "0.0.3resigned1",
  "description": "Don't click now.",
  "background": {
    "scripts": [
      "clicklater.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "context-menu-listener.js"
      ]
    }
  ],
  "permissions": [
    "contextMenus",
    "tabs",
    "<all_urls>",
    "activeTab"
  ],
  "icons": {
    "32": "/data/click-later.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@clicklater"
    }
  }
}