Examine source code of Fennec TextWrap

{
  "manifest_version": 2,
  "name": "Fennec TextWrap",
  "version": "1.2.7resigned1",
  "description": "Adds text wrap/reflow to Firefox on Android. Reflows the whole page - just pinch to zoom!",
  "homepage_url": "https://github.com/siyangqiu/FFTextWrap",
  "icons": {
    "48": "icons/logo-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "FFTextWrap.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4ce09ef4-b02b-496f-8e2e-2369d70e01ec}"
    }
  }
}