Examine source code of SimplyFeed - LinkedIn Feed Filter

{
  "description": "Filter out liked and promoted posts from your LinkedIn feed!",
  "version": "0.0.0.3",
  "name": "SimplyFeed - LinkedIn Feed Filter",
  "permissions": [
    "webNavigation",
    "storage"
  ],
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "active-16.png",
      "32": "active-32.png",
      "64": "active-64.png",
      "128": "active-128.png"
    }
  },
  "icons": {
    "16": "active-16.png",
    "32": "active-32.png",
    "64": "active-64.png",
    "128": "active-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "contentScript.bundle.js"
      ],
      "css": [
        "content.styles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "content.styles.css",
    "active-128.png",
    "active-32.png"
  ],
  "manifest_version": 2,
  "content_security_policy": "script-src 'self' 'unsafe-eval' https://ssl.google-analytics.com; object-src 'self'"
}