Examine source code of Chirr App

{
  "name": "Chirr App",
  "version": "1.1.0",
  "description": "Turn a blog post into a Twitter thread in a single click",
  "manifest_version": 2,
  "icons": {
    "128": "icon.png"
  },
  "browser_action": {
    "default_icon": {
      "128": "toolbarLight.png"
    },
    "default_title": "Chirr App"
  },
  "permissions": [
    "contextMenus",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "global.js"
      ]
    }
  ]
}