Examine source code of Action Replay Pro

{
  "manifest_version": 2,
  "name": "Action Replay",
  "version": "5.0.3",
  "description": "Automate browser interactions by recording and replaying user actions.",
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "clipboardWrite",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "Action Replay",
    "default_icon": {
      "16": "assets/icons/gear-idle-16.png",
      "32": "assets/icons/gear-idle-32.png",
      "48": "assets/icons/gear-idle-48.png",
      "64": "assets/icons/gear-idle-64.png",
      "128": "assets/icons/gear-sim-128.png"
    },
    "default_popup": "index.html"
  },
  "icons": {
    "16": "assets/icons/gear-sim-16.png",
    "32": "assets/icons/gear-sim-32.png",
    "48": "assets/icons/gear-sim-48.png",
    "64": "assets/icons/gear-sim-64.png",
    "128": "assets/icons/gear-sim-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "assets/icons/gear-idle-16.png",
    "assets/icons/gear-idle-32.png",
    "assets/icons/gear-idle-48.png",
    "assets/icons/gear-idle-64.png",
    "assets/icons/gear-sim-16.png",
    "assets/icons/gear-sim-32.png",
    "assets/icons/gear-sim-48.png",
    "assets/icons/gear-sim-64.png",
    "assets/icons/gear-sim-128.png",
    "index.html",
    "content.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "action-replay11@firefox.org"
    }
  }
}