Polymer Ready

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Polymer Ready",
  "description": "Show an icon in the address bar when it detects some Polymer and Custom components.",
  "version": "0.9.2",
  "icons": {
    "128": "assets/icon128.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "polymer-ready.js"
      ],
      "run_at": "document_start"
    }
  ],
  "options_page": "options.html",
  "page_action": {
    "default_icon": {
      "19": "assets/icon19.png",
      "38": "assets/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Polymer Ready"
  },
  "permissions": [
    "storage"
  ],
  "manifest_version": 2,
  "content_security_policy": "script-src 'self' https://elements.polymer-project.org/catalog.json https://customelementsio.herokuapp.com; object-src 'self'"
}