chromium/chrome/test/data/extensions/uitest/extension_with_action_and_command/manifest.json

{
  "name": "Extension with action and command",
  "manifest_version": 2,
  "version": "0.1",
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "mac": "MacCtrl+Shift+F",
        "default": "Ctrl+Shift+F"
      }
    }
  },
  "browser_action": {}
}