* Drop Old DiskLruCache
* Avoid being interrupted when completing editor
* Protect all journal operations
* Revert "Protect all journal operations"
This reverts commit 5b7c7e3b33a515ee3e92826a6b76c2dfb3040c5d.
* Revert "Avoid being interrupted when completing editor"
This reverts commit cf4fbed1281eff766c6e65b6f685dfc355208a0b.
* Shutdown Thread gracefully
Test: m, Check no thread leaks
* Fix download extensions