|Feature implementation plan=Must-have bugs:
* HTML5 App Cache: [https://bugzilla.mozilla.org/show_bug.cgi?id=683794 We don't do not fire the onupdateready event]
* IndexedDB: Set Version API will change
* IndexedDB: [https://bugzilla.mozilla.org/show_bug.cgi?id=661877 Enable storing files] See also: [[Features/Platform/LargeFilesForIndexedDB feature page for this bug]]
Nice-to-have bugs: