chromium/chrome/test/data/extensions/api_test/all_urls/content_script/manifest.json

{
   "background": {
     "scripts": ["background.js"]
   },
   "content_scripts": [ {
      "js": [ "content_script.js" ],
      "matches": [ "<all_urls>" ]
   } ],
   "permissions": [ "tabs" ],
   "description": "Test whether whitelisted extensions can run scripts everywhere using content script",
   "name": "AllUrls content script permissions",
   "manifest_version": 2,
   "version": "1.0"
}