Examine source code of Harvest - Azure DevOps

{
  "background": {
    "scripts": [
      "js/background/config.js",
      "js/background/cookie.js",
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "js/forwarding.js",
        "js/profiles/azure-devops.js"
      ],
      "matches": [
        "https://*.visualstudio.com/*",
        "https://dev.azure.com/*"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' https://*.harvestapp.com https://*.harvestapp.dev; object-src 'self'",
  "description": "Track time from Chrome for Azure DevOps projects.",
  "icons": {
    "16": "images/h-app@16px.png",
    "48": "images/h-app@48px.png",
    "128": "images/h-app@128px.png"
  },
  "manifest_version": 2,
  "name": "Harvest - Azure DevOps",
  "permissions": [
    "http://*/*",
    "https://*/*",
    "cookies",
    "webRequest",
    "webRequestBlocking"
  ],
  "version": "1.3.1",
  "web_accessible_resources": [
    "images/trello-timer-icon.png"
  ],
  "browser_action": {
    "default_icon": {
      "19": "images/h-toolbar-off@19px.png",
      "38": "images/h-toolbar-off@38px.png"
    },
    "default_title": "Harvest - Azure DevOps"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2fe2a36-767f-4588-9d02-8e59d588fa83}"
    }
  }
}