myvtm/addin/res/VTMModifyHeaders/manifest.json

{
  "description": "Modify Headers on VTM Devices",
  "manifest_version": 2,
  "name": "VTModifyHeaders",
  "version": "1.0.0",
  "icons": {
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "extraHeaders",
    "webNavigation",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "VTModifyHeaders"
  }
}