Examine source code of CSP Evaluator Content

{
  "manifest_version": 2,
  "name": "CSP Evaluator",
  "version": "1.0",
  "description": "Evaluate the Content Security Policy (CSP) of the current page.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "webRequest",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "Evaluate CSP",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{69644bda-fbd1-4f08-bc70-a3a1a50358f0}"
    }
  }
}