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

{
  "name": "9: Page Action",
  "description": "Test",
  "version": "0.1",
  "manifest_version": 2,
  "page_action": {
    "default_title": "Title",
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": ["background.js"]
  },
  "permissions": ["tabs", "*://*/*"]
}