Examine source code of Web Shield Mobile

{
  "manifest_version": 2,
  "name": "Web Shield Mobile",
  "short_name": "Web Shield",
  "description": "Bloqueia anúncios e rastreadores no Firefox, com proteção para o YouTube e reprodução contínua em segundo plano.",
  "version": "1.3.1",
  "permissions": [
    "<all_urls>",
    "activeTab",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "Web Shield",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "64": "assets/icon-64.png",
      "96": "assets/icon-96.png",
      "128": "assets/icon-128.png"
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "64": "assets/icon-64.png",
    "96": "assets/icon-96.png",
    "128": "assets/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "content/cosmetic.css"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "content/background-playback-firefox.js",
        "content/youtube-control.js",
        "content/youtube.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "content/continuous-playback.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "web-shield-mobile@adielsonsetubal.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}