Chroming the map tooltip to use opacity fade transitions.
Chroming the map tooltip to use opacity fade transitions.


Former-commit-id: b073c486ce3fba4e907e41deb9e59ff66fd1cb0b
JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView