> Why would Google drop Dart? Google is almost guaranteed to drop any project that does not have high traction and/or high income within a few years of release. Dart has neither income nor traction. If Google does not drop it, I will be very surprised and impressed.

Likewise. As it happens, my model's* 5-year survival prediction (=Dart being supported by Google in ~March 2018) is just 21%. I can't say I really disagree.

* http://www.gwern.net/Google%20shutdowns