chrome/common/extensions/docs/examples/api/processes/process_monitor/manifest.json

{
  "name": "Process Monitor",
  "version": "1.2",
  "description": "Adds a browser action that monitors resource usage of all browser processes.",
  "permissions": [
    "processes"
  ],
  "browser_action": {
      "default_title": "Process Monitor",
      "default_icon": "icon.png",
      "default_popup": "popup.html"
  },
  "manifest_version": 2
}