chromium/ui/file_manager/integration_tests/testing_provider/manifest_source_file.json

{
  // chrome-extension://pkplfbidichfdicaijlchgnapepdginl
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtDfX9dHNh948bt00YhZBm3P6E5QLaOt+v8kXVtibQfiPtOD2FTScB/f0wX/EQWVO7BkaSOsRkTPcPIgocyMPYr2FLgqGLFlYT9nQpKJZUFNF5oJ5rG6Nv7ppf4zEB3j6da1IBRTz2yOZ+6O1TMZxol/V62/QcqrJeggsHTEPGLdr9Ua4b1Ka0xKJnJngZljsbw93FI1o+P9dAh5BS6wTPiZI/vmJVjvMTkSTnaZ3n9Go2t7A0XLcSxLcVyuLAd2mAvSN0mIviOukdM66wr7llif71nKuUt+4qvlr/r9HfwzN6pA4jkwhtS1UD+3CmB+wsHwsnohNcuu4FIQ6rgq/7QIDAQAB",
  "name": "Files Testing Provider file test extension",
  "version": "0.1",
  "manifest_version": 2,
  "description": "Testing Provider file",
  "permissions": [
    "fileSystemProvider"
  ],
  "file_system_provider_capabilities": {
    "source": "file",
    "multiple_mounts": true
  },
  "background": {
    "scripts": ["background.js"]
  }
}