Examine source code of Jira Tracker United

{
  "manifest_version": 2,
  "name": "Jira Tracker United",
  "description": "Integrate Jira Work Log and Tracker Timesheet",
  "version": "2.2resigned1",
  "icons": {
    "16": "assets/Icon-16.png",
    "48": "assets/Icon-48.png",
    "128": "assets/Icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/Icon-16.png",
      "32": "assets/Icon-32.png"
    },
    "default_title": "Jira Tracker United"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.kms-technology.com/*"
      ],
      "css": [],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "*://*.com/"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "web_accessible_resources": [
    "assets/css/*",
    "assets/js/*",
    "assets/fonts/*"
  ],
  "author": "AMP Team",
  "browser_specific_settings": {
    "gecko": {
      "id": "{0ba02370-b130-44b3-945e-23ad72cb6190}"
    }
  }
}