Examine source code of ShieldBrowse - Ad Blocker & Proxy

{
  "manifest_version": 2,
  "name": "ShieldBrowse - Ad Blocker & Proxy",
  "version": "2.0.2",
  "description": "Block ads everywhere (including YouTube), bypass geo-restrictions with built-in proxy/VPN support.",
  "permissions": [
    "storage",
    "tabs",
    "proxy",
    "webRequest",
    "webRequestBlocking",
    "activeTab",
    "contextMenus",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "scripts/background-firefox.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/content.js"
      ],
      "css": [
        "styles/content.css"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://m.youtube.com/*",
        "*://www.youtube.com/*"
      ],
      "js": [
        "scripts/youtube.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "scripts/inject.js"
  ],
  "commands": {
    "toggle-ad-block": {
      "suggested_key": {
        "default": "Alt+Shift+A"
      },
      "description": "Toggle ad blocking on/off"
    },
    "toggle-proxy": {
      "suggested_key": {
        "default": "Alt+Shift+P"
      },
      "description": "Toggle proxy on/off"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "shieldbrowse@extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}