Values of this type are strings. Possible values are:
"document_start": corresponds to
loading. The DOM is still loading.
"document_end": corresponds to
interactive. The DOM has finished loading, but resources such as scripts and images may still be loading.
"document_idle": corresponds to
complete. The document and all its resources have finished loading.
The default value is
BCD tables only load in the browser
Note: This API is based on Chromium's
chrome.extensionTypes API. This documentation is derived from
extension_types.json in the Chromium code.