chromium/chrome/test/data/extensions/api_test/content_scripts/css_injection/manifest.json

{
  "name": "CSS Injection Test",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Tests that css is injected into pages.",
  "content_scripts": [ {
    "css": [ "content_styles.css" ],
    "matches": [ "<all_urls>" ],
    "exclude_matches": ["*://*/extensions/test_file.html"]
  }]
}