Add OS X proxy icon to title bar
Add OS X proxy icon to title bar

Fixes #1891.

Test Plan:

  * Opened Atom window in directory, verified directory icon shows up
  * Opened a file and verified icon changed
  * Right clicked icon, verified menu appears
  * Drag file to terminal and it pastes the file path (yay)
  * Opened a new Atom window and opened some files in that to make sure that
    it didn't change the original window

I didn't add any specs for this - advice welcome here. I also haven't tested
on Windows or Linux but it looks like `setRepresentedFilename` is a noop on
those platforms.

ilovezy/atom,anuwat121/atom,florianb/atom,hpham04/atom,lovesnow/atom,fedorov/atom,ardeshirj/atom,tisu2tisu/atom,ralphtheninja/atom,johnhaley81/atom,isghe/atom,kjav/atom,kdheepak89/atom,acontreras89/atom,stinsonga/atom,deepfox/atom,Andrey-Pavlov/atom,ali/atom,sillvan/atom,sebmck/atom,sillvan/atom,decaffeinate-examples/atom,Mokolea/atom,Jandersoft/atom,fscherwi/atom,dsandstrom/atom,yangchenghu/atom,liuxiong332/atom,ykeisuke/atom,kdheepak89/atom,crazyquark/atom,kc8wxm/atom,sebmck/atom,tony612/atom,vcarrera/atom,mostafaeweda/atom,fedorov/atom,G-Baby/atom,palita01/atom,yomybaby/atom,targeter21/atom,bryonwinger/atom,hagb4rd/atom,n-riesco/atom,abcP9110/atom,mertkahyaoglu/atom,G-Baby/atom,yalexx/atom,hagb4rd/atom,AlisaKiatkongkumthon/atom,constanzaurzua/atom,scippio/atom,toqz/atom,jlord/atom,medovob/atom,SlimeQ/atom,001szymon/atom,nvoron23/atom,Sangaroonaom/atom,DiogoXRP/atom,qskycolor/atom,Hasimir/atom,SlimeQ/atom,matthewclendening/atom,crazyquark/atom,RobinTec/atom,fredericksilva/atom,lisonma/atom,lovesnow/atom,0x73/atom,gzzhanghao/atom,Jdesk/atom,basarat/atom,constanzaurzua/atom,mnquintana/atom,stuartquin/atom,brettle/atom,basarat/atom,CraZySacX/atom,g2p/atom,FIT-CSE2410-A-Bombs/atom,mrodalgaard/atom,jjz/atom,prembasumatary/atom,vinodpanicker/atom,pkdevbox/atom,rxkit/atom,hakatashi/atom,MjAbuz/atom,Rodjana/atom,deoxilix/atom,MjAbuz/atom,sekcheong/atom,mnquintana/atom,panuchart/atom,kittens/atom,florianb/atom,andrewleverette/atom,deepfox/atom,avdg/atom,sxgao3001/atom,rookie125/atom,lovesnow/atom,kandros/atom,targeter21/atom,originye/atom,qskycolor/atom,chengky/atom,hpham04/atom,Rychard/atom,pkdevbox/atom,boomwaiza/atom,scv119/atom,Jandersolutions/atom,Ju2ender/atom,AdrianVovk/substance-ide,dannyflax/atom,ardeshirj/atom,fedorov/atom,rmartin/atom,qiujuer/atom,Austen-G/BlockBuilder,me6iaton/atom,ppamorim/atom,bencolon/atom,charleswhchan/atom,rookie125/atom,kc8wxm/atom,matthewclendening/atom,ezeoleaf/atom,avdg/atom,rjattrill/atom,sebmck/atom,darwin/atom,Rychard/atom,phord/atom,AdrianVovk/substance-ide,jtrose2/atom,me6iaton/atom,vjeux/atom,bsmr-x-script/atom,AlbertoBarrago/atom,rmartin/atom,prembasumatary/atom,Ju2ender/atom,ilovezy/atom,hagb4rd/atom,Jandersoft/atom,splodingsocks/atom,Locke23rus/atom,rmartin/atom,me-benni/atom,splodingsocks/atom,rjattrill/atom,folpindo/atom,pkdevbox/atom,alexandergmann/atom,fang-yufeng/atom,niklabh/atom,SlimeQ/atom,phord/atom,batjko/atom,devoncarew/atom,jtrose2/atom,bcoe/atom,AlexxNica/atom,GHackAnonymous/atom,svanharmelen/atom,beni55/atom,chfritz/atom,ironbox360/atom,hharchani/atom,svanharmelen/atom,codex8/atom,omarhuanca/atom,ardeshirj/atom,dkfiresky/atom,splodingsocks/atom,jeremyramin/atom,lpommers/atom,Dennis1978/atom,pombredanne/atom,atom/atom,Shekharrajak/atom,Andrey-Pavlov/atom,amine7536/atom,ppamorim/atom,bj7/atom,synaptek/atom,rlugojr/atom,SlimeQ/atom,charleswhchan/atom,NunoEdgarGub1/atom,pombredanne/atom,abcP9110/atom,toqz/atom,basarat/atom,russlescai/atom,jlord/atom,atom/atom,tisu2tisu/atom,nvoron23/atom,yalexx/atom,tony612/atom,lisonma/atom,amine7536/atom,Ju2ender/atom,bcoe/atom,brettle/atom,ppamorim/atom,dannyflax/atom,AlisaKiatkongkumthon/atom,fedorov/atom,johnhaley81/atom,champagnez/atom,hagb4rd/atom,rxkit/atom,bolinfest/atom,niklabh/atom,sotayamashita/atom,woss/atom,kjav/atom,cyzn/atom,anuwat121/atom,RobinTec/atom,bryonwinger/atom,Neron-X5/atom,rsvip/aTom,Abdillah/atom,bencolon/atom,deepfox/atom,lisonma/atom,tanin47/atom,ashneo76/atom,basarat/atom,FIT-CSE2410-A-Bombs/atom,ObviouslyGreen/atom,FoldingText/atom,ali/atom,ObviouslyGreen/atom,beni55/atom,hpham04/atom,jlord/atom,ashneo76/atom,dannyflax/atom,fedorov/atom,Neron-X5/atom,brumm/atom,fredericksilva/atom,h0dgep0dge/atom,darwin/atom,deoxilix/atom,davideg/atom,devoncarew/atom,jacekkopecky/atom,Dennis1978/atom,Andrey-Pavlov/atom,batjko/atom,Huaraz2/atom,harshdattani/atom,palita01/atom,ralphtheninja/atom,folpindo/atom,paulcbetts/atom,florianb/atom,einarmagnus/atom,xream/atom,vjeux/atom,ashneo76/atom,RobinTec/atom,Ingramz/atom,FoldingText/atom,ppamorim/atom,transcranial/atom,brettle/atom,qskycolor/atom,deoxilix/atom,florianb/atom,nucked/atom,davideg/atom,Abdillah/atom,seedtigo/atom,devoncarew/atom,yalexx/atom,rlugojr/atom,rjattrill/atom,Austen-G/BlockBuilder,einarmagnus/atom,burodepeper/atom,ezeoleaf/atom,gontadu/atom,kdheepak89/atom,tmunro/atom,FoldingText/atom,gisenberg/atom,Locke23rus/atom,mrodalgaard/atom,oggy/atom,Galactix/atom,NunoEdgarGub1/atom,pengshp/atom,originye/atom,chengky/atom,jeremyramin/atom,liuderchi/atom,Abdillah/atom,mertkahyaoglu/atom,001szymon/atom,sekcheong/atom,johnrizzo1/atom,gabrielPeart/atom,jordanbtucker/atom,dijs/atom,vinodpanicker/atom,jacekkopecky/atom,stuartquin/atom,Andrey-Pavlov/atom,Abdillah/atom,rsvip/aTom,gontadu/atom,AlexxNica/atom,amine7536/atom,qiujuer/atom,helber/atom,jjz/atom,kaicataldo/atom,bolinfest/atom,matthewclendening/atom,jjz/atom,kc8wxm/atom,Mokolea/atom,RuiDGoncalves/atom,Hasimir/atom,kevinrenaers/atom,AdrianVovk/substance-ide,jtrose2/atom,palita01/atom,Ingramz/atom,ilovezy/atom,targeter21/atom,codex8/atom,targeter21/atom,efatsi/atom,hharchani/atom,dsandstrom/atom,pombredanne/atom,githubteacher/atom,kjav/atom,qskycolor/atom,dkfiresky/atom,prembasumatary/atom,panuchart/atom,oggy/atom,jordanbtucker/atom,Dennis1978/atom,sekcheong/atom,tanin47/atom,dijs/atom,Austen-G/BlockBuilder,bcoe/atom,abcP9110/atom,mostafaeweda/atom,bryonwinger/atom,Jandersolutions/atom,yalexx/atom,alfredxing/atom,decaffeinate-examples/atom,amine7536/atom,githubteacher/atom,mdumrauf/atom,scv119/atom,codex8/atom,fredericksilva/atom,beni55/atom,scv119/atom,nvoron23/atom,DiogoXRP/atom,g2p/atom,Rodjana/atom,Abdillah/atom,Ju2ender/atom,svanharmelen/atom,wiggzz/atom,woss/atom,NunoEdgarGub1/atom,daxlab/atom,burodepeper/atom,russlescai/atom,stinsonga/atom,FoldingText/atom,daxlab/atom,vhutheesing/atom,dkfiresky/atom,Rychard/atom,abcP9110/atom,Neron-X5/atom,yamhon/atom,charleswhchan/atom,liuxiong332/atom,0x73/atom,einarmagnus/atom,liuxiong332/atom,hharchani/atom,Jandersolutions/atom,efatsi/atom,Neron-X5/atom,Jdesk/atom,kdheepak89/atom,russlescai/atom,russlescai/atom,folpindo/atom,oggy/atom,stuartquin/atom,seedtigo/atom,davideg/atom,ralphtheninja/atom,oggy/atom,rjattrill/atom,kc8wxm/atom,Galactix/atom,YunchengLiao/atom,brumm/atom,vhutheesing/atom,sxgao3001/atom,Jandersoft/atom,oggy/atom,alexandergmann/atom,ezeoleaf/atom,Shekharrajak/atom,batjko/atom,helber/atom,champagnez/atom,n-riesco/atom,me6iaton/atom,kevinrenaers/atom,tjkr/atom,phord/atom,sxgao3001/atom,hellendag/atom,hellendag/atom,kjav/atom,tmunro/atom,ironbox360/atom,kevinrenaers/atom,isghe/atom,brumm/atom,dkfiresky/atom,hharchani/atom,toqz/atom,YunchengLiao/atom,kaicataldo/atom,fang-yufeng/atom,abcP9110/atom,kandros/atom,isghe/atom,Arcanemagus/atom,crazyquark/atom,yalexx/atom,0x73/atom,RuiDGoncalves/atom,chfritz/atom,rsvip/aTom,einarmagnus/atom,toqz/atom,DiogoXRP/atom,RobinTec/atom,Ingramz/atom,amine7536/atom,dsandstrom/atom,john-kelly/atom,BogusCurry/atom,g2p/atom,acontreras89/atom,nrodriguez13/atom,johnhaley81/atom,vhutheesing/atom,isghe/atom,0x73/atom,johnrizzo1/atom,acontreras89/atom,jacekkopecky/atom,prembasumatary/atom,yomybaby/atom,ali/atom,paulcbetts/atom,devoncarew/atom,sekcheong/atom,dijs/atom,liuxiong332/atom,GHackAnonymous/atom,anuwat121/atom,Jdesk/atom,paulcbetts/atom,FoldingText/atom,helber/atom,bolinfest/atom,jordanbtucker/atom,transcranial/atom,mertkahyaoglu/atom,yangchenghu/atom,bj7/atom,dkfiresky/atom,sillvan/atom,isghe/atom,AlbertoBarrago/atom,kittens/atom,bencolon/atom,Hasimir/atom,kittens/atom,GHackAnonymous/atom,nucked/atom,synaptek/atom,dannyflax/atom,pombredanne/atom,gzzhanghao/atom,n-riesco/atom,vcarrera/atom,john-kelly/atom,kdheepak89/atom,tisu2tisu/atom,mostafaeweda/atom,KENJU/atom,ReddTea/atom,wiggzz/atom,nvoron23/atom,scippio/atom,tjkr/atom,omarhuanca/atom,ezeoleaf/atom,chengky/atom,ReddTea/atom,mdumrauf/atom,GHackAnonymous/atom,niklabh/atom,bsmr-x-script/atom,KENJU/atom,efatsi/atom,jlord/atom,alfredxing/atom,CraZySacX/atom,john-kelly/atom,Jandersoft/atom,kaicataldo/atom,hharchani/atom,mertkahyaoglu/atom,chengky/atom,tanin47/atom,splodingsocks/atom,Jandersolutions/atom,ilovezy/atom,davideg/atom,crazyquark/atom,jtrose2/atom,sebmck/atom,ali/atom,chfritz/atom,acontreras89/atom,mdumrauf/atom,ReddTea/atom,synaptek/atom,ivoadf/atom,Klozz/atom,tony612/atom,yomybaby/atom,BogusCurry/atom,n-riesco/atom,rmartin/atom,liuderchi/atom,fredericksilva/atom,dannyflax/atom,dannyflax/atom,omarhuanca/atom,h0dgep0dge/atom,ivoadf/atom,devoncarew/atom,Jonekee/atom,gontadu/atom,nrodriguez13/atom,Austen-G/BlockBuilder,t9md/atom,n-riesco/atom,hakatashi/atom,wiggzz/atom,BogusCurry/atom,darwin/atom,qiujuer/atom,SlimeQ/atom,vjeux/atom,fang-yufeng/atom,jjz/atom,elkingtonmcb/atom,me6iaton/atom,Galactix/atom,Locke23rus/atom,deepfox/atom,andrewleverette/atom,transcranial/atom,ali/atom,alfredxing/atom,Sangaroonaom/atom,originye/atom,Ju2ender/atom,xream/atom,mnquintana/atom,dsandstrom/atom,charleswhchan/atom,lisonma/atom,scippio/atom,scv119/atom,ivoadf/atom,Jdesk/atom,crazyquark/atom,001szymon/atom,bryonwinger/atom,elkingtonmcb/atom,vinodpanicker/atom,synaptek/atom,mostafaeweda/atom,omarhuanca/atom,medovob/atom,Jonekee/atom,Jandersolutions/atom,rsvip/aTom,devmario/atom,decaffeinate-examples/atom,h0dgep0dge/atom,codex8/atom,sillvan/atom,xream/atom,jeremyramin/atom,kc8wxm/atom,john-kelly/atom,seedtigo/atom,vinodpanicker/atom,gisenberg/atom,woss/atom,vjeux/atom,KENJU/atom,hellendag/atom,ironbox360/atom,bcoe/atom,sotayamashita/atom,rookie125/atom,CraZySacX/atom,atom/atom,FIT-CSE2410-A-Bombs/atom,G-Baby/atom,florianb/atom,KENJU/atom,MjAbuz/atom,fang-yufeng/atom,basarat/atom,kandros/atom,vjeux/atom,cyzn/atom,mnquintana/atom,harshdattani/atom,rsvip/aTom,MjAbuz/atom,prembasumatary/atom,targeter21/atom,jlord/atom,vcarrera/atom,hagb4rd/atom,me6iaton/atom,Jonekee/atom,matthewclendening/atom,champagnez/atom,jacekkopecky/atom,devmario/atom,woss/atom,andrewleverette/atom,fscherwi/atom,stinsonga/atom,sebmck/atom,hakatashi/atom,acontreras89/atom,githubteacher/atom,pengshp/atom,cyzn/atom,NunoEdgarGub1/atom,KENJU/atom,sxgao3001/atom,ppamorim/atom,vcarrera/atom,t9md/atom,rlugojr/atom,hpham04/atom,Hasimir/atom,constanzaurzua/atom,Mokolea/atom,fscherwi/atom,hpham04/atom,nvoron23/atom,medovob/atom,mostafaeweda/atom,Sangaroonaom/atom,nrodriguez13/atom,mrodalgaard/atom,harshdattani/atom,me-benni/atom,mnquintana/atom,h0dgep0dge/atom,lpommers/atom,constanzaurzua/atom,panuchart/atom,PKRoma/atom,nucked/atom,devmario/atom,tony612/atom,jtrose2/atom,hakatashi/atom,gisenberg/atom,Shekharrajak/atom,elkingtonmcb/atom,RuiDGoncalves/atom,charleswhchan/atom,constanzaurzua/atom,lovesnow/atom,Austen-G/BlockBuilder,jacekkopecky/atom,paulcbetts/atom,tony612/atom,stinsonga/atom,avdg/atom,Andrey-Pavlov/atom,batjko/atom,einarmagnus/atom,AlexxNica/atom,t9md/atom,sillvan/atom,sotayamashita/atom,boomwaiza/atom,me-benni/atom,ilovezy/atom,woss/atom,deepfox/atom,bcoe/atom,NunoEdgarGub1/atom,gabrielPeart/atom,Austen-G/BlockBuilder,davideg/atom,synaptek/atom,kittens/atom,YunchengLiao/atom,PKRoma/atom,sekcheong/atom,Jandersoft/atom,devmario/atom,ReddTea/atom,ykeisuke/atom,FoldingText/atom,Rodjana/atom,AlisaKiatkongkumthon/atom,Arcanemagus/atom,Galactix/atom,dsandstrom/atom,ReddTea/atom,bj7/atom,Shekharrajak/atom,johnrizzo1/atom,lisonma/atom,lpommers/atom,ykeisuke/atom,qskycolor/atom,kittens/atom,pombredanne/atom,Arcanemagus/atom,codex8/atom,batjko/atom,rxkit/atom,rmartin/atom,yomybaby/atom,russlescai/atom,YunchengLiao/atom,yamhon/atom,gisenberg/atom,burodepeper/atom,gabrielPeart/atom,toqz/atom,Galactix/atom,fredericksilva/atom,PKRoma/atom,Huaraz2/atom,omarhuanca/atom,alexandergmann/atom,jjz/atom,Klozz/atom,MjAbuz/atom,bsmr-x-script/atom,Huaraz2/atom,vcarrera/atom,GHackAnonymous/atom,tjkr/atom,pengshp/atom,decaffeinate-examples/atom,daxlab/atom,boomwaiza/atom,vinodpanicker/atom,john-kelly/atom,liuderchi/atom,jacekkopecky/atom,AlbertoBarrago/atom,liuderchi/atom,mertkahyaoglu/atom,qiujuer/atom,gisenberg/atom,fang-yufeng/atom,kjav/atom,sxgao3001/atom,gzzhanghao/atom,devmario/atom,Klozz/atom,qiujuer/atom,Hasimir/atom,matthewclendening/atom,YunchengLiao/atom,ObviouslyGreen/atom,yomybaby/atom,Neron-X5/atom,liuxiong332/atom,yangchenghu/atom,Jdesk/atom,tmunro/atom,Shekharrajak/atom,chengky/atom,lovesnow/atom,yamhon/atom,RobinTec/atom,basarat/atom