Examine source code of Chrome Intent Url Fixer

{
  "manifest_version": 2,
  "name": "Chrome Intent Url Fixer",
  "version": "4.0",
  "description": "Converts Android intent:// redirect headers to https:// at the network level.",
  "author": "Shawon2901",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-on-48.png",
      "128": "icons/icon-on-128.png"
    },
    "default_title": "Chrome Intent URL Fixer",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon-on-48.png",
    "128": "icons/icon-on-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "intent-url-fixer@local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}