Fix returnToViewport.
Fix returnToViewport.

The super-class's constructor sets @options, so we can't set it here;
instead, we pass the options along.

cyrixhero/vimium,PrestanceDesign/vimium,smblott-github/vimium,mrmr1993/vimium,dimatter/vimium,dimatter/vimium,VPashkov/vimium,decaffeinate-examples/vimium,PickRelated/vimium,borgified/vimium,mrmr1993/vimium,hhsue/vimium,elderbas/vimium,PickRelated/vimium,borgified/vimium,tuchangwei/vimium,bkudria/vimium,elegantwww/vimium,PickRelated/vimium,gdh1995/vimium,gdh1995/vimium,philc/vimium,elderbas/vimium,zhangmin510/vimium,csmalin/vimium,smblott-github/vimium,philc/vimium,Aleroniponi/vimium,bkudria/vimium,smblott-github/vimium,Lw-Cui/vimium,poacher2k/vimium,PrestanceDesign/vimium,csmalin/vimium,hhsue/vimium,Aleroniponi/vimium,zhangmin510/vimium,willsALMANJ/vimium,cyrixhero/vimium,douglas-larocca/vimium,elegantwww/vimium,tuchangwei/vimium,Lw-Cui/vimium,Robinson10240/vimium,decaffeinate-examples/vimium,justalittlenoob/vimium,Aleroniponi/vimium,csmalin/vimium,willsALMANJ/vimium,poacher2k/vimium,philc/vimium,cyrixhero/vimium,bkudria/vimium,gdh1995/vimium,Lw-Cui/vimium,elegantwww/vimium,decaffeinate-examples/vimium,douglas-larocca/vimium,justalittlenoob/vimium,elderbas/vimium,hhsue/vimium,willsALMANJ/vimium,VPashkov/vimium,mrmr1993/vimium,justalittlenoob/vimium,douglas-larocca/vimium,Robinson10240/vimium,borgified/vimium,zhangmin510/vimium,tuchangwei/vimium,poacher2k/vimium,VPashkov/vimium,PrestanceDesign/vimium,dimatter/vimium,Robinson10240/vimium