Examine source code of RR Adblocker

{
  "name": "RR Adblocker",
  "version": "0.1.3.5",
  "description": "RR Adblocker blocks ads and trackers to make your web surfing faster and safer.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "yt_blocks.js",
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "./icons/ad48.png",
    "64": "./icons/ad64.png"
  },
  "browser_action": {
    "default_popup": "Popup.html",
    "default_title": "RR Adblocker"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{16c5121d-68fd-40ad-b9de-d73b69f97d3a}"
    }
  }
}