We propose to remove support for the legacy storage quota API, window.webkitStorageInfo. Originally introduced in 2011, Chrome implemented the prefixed quota API which was immediately succeeded by the Quota API which as since been deprecated as well. The legacy storage quota API was never implemented by any other browser, and has been marked deprecated since 2013.
A number of storage APIs (including quota-managed storage APIs) will be partitioned in third-party contexts. The API window.webkitStorageInfo is Chrome-only, and has been deprecated since 2013. Rather than investing more support on these legacy API we propose to disable it in 1st and 3rd party contexts.