chromium/chrome/test/data/extensions/browsertest/chrome_theme_url/manifest.json

{
  "name": "chrome theme test",
  "version": "0.1",
  "manifest_version": 2,
  "description": "Tests whether we can load images through chrome://theme/.",
  "background": {
    "page": "test.html"
  },
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCtEsRXms+bpXbcmBFljmWOKVkVPteGqY376YUY6CRcUNsYft98M41KO+oPURWfbauCErLyJb4Y1xcb4ZrRnwGoNSvLaTY/ij4bdUn8eNPtqviLLrHZCEBaNwHYFNPCOEQqvtmjZ+J0NGCgUbx2bUouD+BDDG30GeMfu7ArzB5RLQIDAQAB"
}