Examine source code of Code Compliance

{
  "manifest_version": 2,
  "name": "Code Compliance",
  "description": "Check a page's code compliance, see the errors & warnings by line. Works on local HTML and pages behind authentication.",
  "version": "1.0.3",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "page_action": {
    "default_title": "Code Compliance",
    "default_icon": "icon.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "<all_urls>"
  ]
}