Console.log filled with "stopping Handoff advertising"
Just to make sure do clear your browser's cookies and history.

But with your limited Console log it could be this.


  Yosemite is designed to handoff integrated app statuses to other Apple
  devices, the "advertising" may simply refer to the fact that my
  Yosemite Mac is advertising that there is stuff to handoff to an iOS 8
  device, but that functionality is not yet implemented