Event.timeStamp is always 0 for JS key events

See https://developer.mozilla.org/en-US/docs/Web/API/Event/timeStamp

Try this with simplebrowser: https://developer.mozilla.org/en-US/docs/Web/API/Event/timeStamp#Result

I have tried this on Linux only but I assume all platforms are affected.

The problem is with currentTimeForEvent() function in src/core/web_event_factory.cpp:
It uses base::TimeTicks::FromInternalValue() to convert Qt timestamp to base::TimeTicks. This function is deprecated and seems to convert to a wrong value.