Examine source code of Web Component DevTools

{
  "manifest_version": 2,
  "name": "Web Component DevTools",
  "version": "0.1.17",
  "minimum_chrome_version": "10.0",
  "description": "Developer tooling for Web Components and Web Component Libraries",
  "author": "Matsuuu <huhta.matias@gmail.com>",
  "devtools_page": "wc-devtools-init.html",
  "background": {
    "page": "wc-devtools-background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "*.js"
  ],
  "permissions": [
    "tabs",
    "contextMenus"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "icons": {
    "16": "logo-16.png",
    "48": "logo-48.png",
    "128": "logo-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0996118d-e2d4-4742-9059-76599ac177c1}"
    }
  }
}