chromium/chrome/test/data/extensions/api_test/keybinding/global/manifest.json

{
  "name": "An extension to test global shortcuts",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": ["background.js"]
  },
  "commands": {
    "Ctrl-Shift-1-non-global": {
      "suggested_key": {
        "default": "Ctrl+Shift+1"
      },      
      "description": "Test fails if called (non-global)"
    },
    "Ctrl-Shift-A-Non-Assignable-Globally": {
      "suggested_key": {
        "default": "Ctrl+Shift+A"
      },      
      "description":
          "Test fails if called (Ctrl+Shift+A not auto-assignable globally)",
      "global": true
    },
    "Ctrl-Shift-8-Valid-Global-Shortcut": {
      "suggested_key": {
        "default": "Ctrl+Shift+8"
      },
      "description": "Test passes if called (global shortcut)",
      "global": true
    }
  }
}