Examine source code of Redirect to HTTPS

{
  "manifest_version": 2,
  "name": "Redirect to HTTPS",
  "description": "Yet another extension to redirect HTTP requests to HTTPS",
  "version": "1.0.3resigned1",
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{62b194d2-06e9-48e2-b7f1-f8d96d600a22}"
    }
  }
}