/**
* Make a new sandbox that inherits given `source`'s principals. Source can be
* URI string, DOMWindow or `null` for system principals.
*/
function sandbox(target, options) {
options = options || {};
options.metadata = options.metadata ? options.metadata : {};
options.metadata.addonID = options.metadata.addonID ?
options.metadata.addonID : self.id;
let sandbox = Cu.Sandbox(target || systemPrincipal, options);
Cu.setSandboxMetadata(sandbox, options.metadata);
let innerWindowID = options.metadata['inner-window-id']
if (innerWindowID) {
addContentGlobal({
global: sandbox,
'inner-window-id': innerWindowID
});
}
return sandbox;
}