Fix chrome indexer

[maeve]

Dearerst Maintainer,

If chrome is running, then the chrome_sync indexer would panic:

thread 'main' panicked at 'place prep: SqliteFailure(Error { code: DatabaseBusy, extended_code: 5 }, Some("database is locked"))', src/bin/chrome_sync/main.rs:90:281

To prevent this, copy the sqlite db to a tempfile first, just like firefox_sync. Easy peasy.

Thank you for your time and consideration.

Database busy
But I have too many tabs
Open to quit now