Content script should handle message even when there is no tab property
Content script should handle message even when there is no tab property

bkudria/vimium,tuchangwei/vimium,bkudria/vimium,borgified/vimium,gdh1995/vimium,csmalin/vimium,philc/vimium,crazypenguincode/vimium,jb55/vimium-plus,Lw-Cui/vimium,VPashkov/vimium,zhangmin510/vimium,jb55/vimium-plus,cyrixhero/vimium,dimatter/vimium,justalittlenoob/vimium,elderbas/vimium,tuchangwei/vimium,PickRelated/vimium,Robinson10240/vimium,PrestanceDesign/vimium,smblott-github/vimium,csmalin/vimium,zhangmin510/vimium,elegantwww/vimium,crazypenguincode/vimium,willsALMANJ/vimium,PickRelated/vimium,dimatter/vimium,Lw-Cui/vimium,mrmr1993/vimium,csmalin/vimium,smblott-github/vimium,cyrixhero/vimium,tuchangwei/vimium,philc/vimium,justalittlenoob/vimium,hhsue/vimium,bkudria/vimium,mrmr1993/vimium,Robinson10240/vimium,douglas-larocca/vimium,decaffeinate-examples/vimium,wildeyes/vimium,elegantwww/vimium,cyrixhero/vimium,justalittlenoob/vimium,VPashkov/vimium,zhangmin510/vimium,PrestanceDesign/vimium,wildeyes/vimium,decaffeinate-examples/vimium,Robinson10240/vimium,hhsue/vimium,willsALMANJ/vimium,gdh1995/vimium,douglas-larocca/vimium,Lw-Cui/vimium,wildeyes/vimium,douglas-larocca/vimium,smblott-github/vimium,smblott-github/vimium-smblott,PickRelated/vimium,borgified/vimium,willsALMANJ/vimium,borgified/vimium,Aleroniponi/vimium,elegantwww/vimium,mrmr1993/vimium,elderbas/vimium,Aleroniponi/vimium,dimatter/vimium,smblott-github/vimium-smblott,poacher2k/vimium,poacher2k/vimium,VPashkov/vimium,philc/vimium,Aleroniponi/vimium,PrestanceDesign/vimium,decaffeinate-examples/vimium,poacher2k/vimium,gdh1995/vimium,hhsue/vimium,elderbas/vimium