Examine source code of Quora Ad Killer

{
  "manifest_version": 2,
  "name": "Quora Ad Killer",
  "description": "Gets rid of the ads and sponsored content from Quora.",
  "author": "Wrybread",
  "version": "1.2",
  "icons": {
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": "icon128.png"
  },
  "background": {
    "scripts": [
      "background-firefox.js"
    ]
  },
  "permissions": [
    "https://*.quora.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wrybread@gmail.com-quora_ad_killer"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.quora.com/*"
      ],
      "js": [
        "removeAds.js"
      ]
    }
  ]
}