Examine source code of What To Watch

{
  "manifest_version": 2,
  "name": "What To Watch",
  "description": "Instantly find your favourite movies and TV shows! Or just search for something new.",
  "version": "0.2.1",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "What To Watch"
  },
  "icons": {
    "16": "wtw-logo.png",
    "48": "wtw-logo.png",
    "128": "wtw-logo.png"
  },
  "content_security_policy": "script-src 'self' 'sha256-5As4+3YpY62+l38PsxCEkjB1R4YtyktBtRScTJ3fyLU='; object-src 'self'",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "moweblab@gmail.com"
    }
  }
}