Devtools Rulers

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Devtools Rulers",
  "short_name": "Rulers",
  "version": "1.5",
  "description": "Adds rulers panel to devtools!",
  "devtools_page": "devtools/devtools.html",
  "background": {
    "page": "background/background.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "injections/ui.css"
      ],
      "js": [
        "common/utils.js",
        "injections/ui.js",
        "common/handlebars.js",
        "common/lodash.min.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "default_locale": "en"
}