LevelDBWrapper mojo interface has become very specifically tied to the implementation and functionality of DOMStorage.
Since namespace cloning in session storage is required to be in the same sequence as the leveldbwrapper calls, it makes sense to make this cloning as a method on the leveldbwrapper mojo interface. This doesn't make sense at all for a genearic leveldb wrapper, so the interface should be made specific to domstorage now.
Comment 1 by bugdroid1@chromium.org
, Jun 7 2018