Watcher

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Watcher",
  "short_name": "Watcher for Developers",
  "description": "Select & Watch resources on a page that are frequently updated during development. Watcher will auto-refresh upon change.",
  "version": "1.2",
  "manifest_version": 2,
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "libs/lodash.js",
      "utility.js",
      "background.js"
    ]
  },
  "devtools_page": "devtools.html"
}