Earlier quoted context omitted.
Rendering engine monoculture isn't a good thing though. If a single rendering engine dominates, then there is less reason to write standards-compliant code - after all, everyone uses WebKit, right?
Yeah. It would be the same problem that WebSQL had: http://www.w3.org/TR/webdatabase/ As much as I was sad to see it go, I sympathize with their problem. If you just have a single C/C++ implementation with no spec, it's a lot harder to know, as a user/web developer, what the correct behavior is and what you can rely on.
It's a shame WebSQL died, though, since I would have loved to have had SQLite in the browser. Maybe the solution would have been to specify a similar, new, SQL database for the web? I would have liked that more than IndexedDB.