It will be more useful to have per-origin quotas across all storage types. Currently, there are a number of inadequate solutions -- replicated functionality in Database and IDBDatabase quota trackers, and fixed quotas for LocalStorage and SessionStorage.
AppCache would probably be included as well. Note that Chrome will need a way to keep LocalStorage quotas separate from the unified quota. (And plan to start aggressively discouraging its use in the near future.)
Was this (at least partially) addressed in https://bugs.webkit.org/show_bug.cgi?id=196545 ?
(In reply to Victor Costan from comment #2) > Was this (at least partially) addressed in > https://bugs.webkit.org/show_bug.cgi?id=196545 ? That bug is about removing dead code, but we do have a quota checker now. It only tracks some types of storage: https://bugs.webkit.org/show_bug.cgi?id=195283