"sandbox": {
"type": "object",
"description": "Defines an collection of app or extension pages that are to be served in a sandboxed unique origin, and optionally a Content Security Policy to use with them.",
"additionalProperties": false,
"properties": {
"pages": {
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": {
"$ref": "#/definitions/page"
}
},
"content_security_policy": {
"$ref": "#/definitions/content_security_policy",
"default": "sandbox allow-scripts allow-forms"
}
},
"required": [
"pages"
]
}http://json.schemastore.org/chrome-manifest (402:6)