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

{
  "name": "A page action that sends a 'clicked' test message",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": ["background.js"]
  },
  "permissions": [
    "tabs", "http://*/*"
  ],
  "page_action": {
    "default_title": "Send message",
    "default_icon": "icon.png"
  },
  "commands": {
    "_execute_page_action": {
      "suggested_key": "Alt+Shift+F",
      "description": ""
    }
  }
}