MKWhat

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "MKWhat",
  "description": "Without add any number your contacts you can send fast messages. Easy and fast!",
  "version": "1.0",
  "browser_action": {
    "default_icon": "icons/mkwhat.png",
    "default_popup": "mkwhat.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "mkwhat.js"
      ]
    }
  ]
}