chromium/ui/accessibility/extensions/highcontrast/manifest.json

{
  "name": "__MSG_HIGHCONTRAST_APPNAME__",
  "version": "0.9.6",
  "description": "__MSG_HIGHCONTRAST_APPDESC__",
  "manifest_version": 3,
  "permissions": [
    "scripting",
    "storage",
    "tabs"
  ],
  "host_permissions": ["<all_urls>"],
  "background": {
      "service_worker": "background.js"
  },
  "action": {
    "default_icon": "highcontrast-19.png",
    "default_popup": "popup.html",
    "default_title": "__MSG_HIGHCONTRAST_APPNAME__"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "common.js",
        "highcontrast.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "highcontrast-16.png",
    "48": "highcontrast-48.png",
    "128": "highcontrast-128.png"
  },
  "default_locale": "en"
}