External script loader

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "External script loader",
  "version": "2.3.0",
  "manifest_version": 2,
  "description": "Enable to load external script when a page loaded",
  "homepage_url": "https://github.com/ui3o/external-extension/",
  "icons": {
    "16": "icons/icon16x16.png",
    "48": "icons/icon48x48.png",
    "128": "icons/icon128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "src/core.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "src/iframe.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "permissions": [
    "https://*/*",
    "http://*/*",
    "http://localhost/",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "src/options.html"
  }
}