Mac's Handoff fucked.
Luckily, the cosmos heard us, and responded with AirShare.
It's a command line to share chrome/safari tab url via airdrop.
Here is a tutorial.
$ sudo curl https://raw.githubusercontent.com/FaiChou/AirShare/master/AirShare-CLI >AirShare & mv AirShare /usr/local/bin
Usage: AirShare -c Share chrome current tab url AirShare -s Share safari current tab url AirShare -h Show usage information Type AirShare without an option to share chrome current tab URL.