Fix for Android importing folly/Random.cpp
Fix for Android importing folly/Random.cpp

Summary: ext/random causes issues building on android

Test Plan: compiled on fbandroid

Reviewed By: bmaurer@fb.com

FB internal diff: D1308224

bobegir/folly,xzmagic/folly,SammyK/folly,charsyam/folly,mqeizi/folly,SammyK/folly,SeanRBurton/folly,SeanRBurton/folly,mqeizi/folly,bsampath/folly,PoisonBOx/folly,constantine001/folly,Orvid/folly,upsoft/folly,project-zerus/folly,sonnyhu/folly,kernelim/folly,romange/folly,tempbottle/folly,guker/folly,tomhughes/folly,theiver9827/folly,loversInJapan/folly,yangjin-unique/folly,juniway/folly,arg0/folly,Eagle-X/folly,chjp2046/folly,theiver9827/folly,Eagle-X/folly,colemancda/folly,PoisonBOx/folly,tomhughes/folly,CJstar/folly,ykarlsbrun/folly,gavioto/folly,SammyK/folly,doctaweeks/folly,PPC64/folly,floxard/folly,sakishum/folly,ykarlsbrun/folly,colemancda/folly,SeanRBurton/folly,SammyK/folly,zhiweicai/folly,mqeizi/folly,reddit/folly,bowlofstew/folly,cole14/folly,reddit/folly,loversInJapan/folly,kernelim/folly,chjp2046/folly,clearlinux/folly,fw1121/folly,stonegithubs/folly,fw1121/folly,reddit/folly,cppfool/folly,Hincoin/folly,raphaelamorim/folly,yangjin-unique/folly,bsampath/folly,upsoft/folly,hongliangzhao/folly,lifei/folly,PoisonBOx/folly,tempbottle/folly,PoisonBOx/folly,doctaweeks/folly,zhiweicai/folly,bikong2/folly,KSreeHarsha/folly,floxard/folly,stonegithubs/folly,bikong2/folly,renyinew/folly,hongliangzhao/folly,brunomorishita/folly,lifei/folly,constantine001/folly,romange/folly,guker/folly,cppfool/folly,clearlinux/folly,clearlylin/folly,ykarlsbrun/folly,rklabs/folly,brunomorishita/folly,arg0/folly,loversInJapan/folly,cppfool/folly,Eagle-X/folly,colemancda/folly,stonegithubs/folly,cole14/folly,bsampath/folly,wildinto/folly,raphaelamorim/folly,zhiweicai/folly,lifei/folly,xzmagic/folly,bowlofstew/folly,gavioto/folly,sonnyhu/folly,bikong2/folly,theiver9827/folly,KSreeHarsha/folly,loversInJapan/folly,nickhen/folly,leolujuyi/folly,Orvid/folly,bsampath/folly,wildinto/folly,nickhen/folly,rklabs/folly,kernelim/folly,renyinew/folly,Hincoin/folly,guker/folly,gaoyingie/folly,fw1121/folly,tempbottle/folly,upsoft/folly,fw1121/folly,CJstar/folly,alexst07/folly,cppfool/folly,bowlofstew/folly,yangjin-unique/folly,yangjin-unique/folly,CJstar/folly,sakishum/folly,juniway/folly,shaobz/folly,Orvid/folly,clearlylin/folly,tomhughes/folly,raphaelamorim/folly,alexst07/folly,renyinew/folly,bobegir/folly,rklabs/folly,wildinto/folly,rklabs/folly,clearlinux/folly,rklabs/folly,clearlinux/folly,nickhen/folly,gaoyingie/folly,xzmagic/folly,gavioto/folly,colemancda/folly,bikong2/folly,romange/folly,lifei/folly,bobegir/folly,kernelim/folly,romange/folly,nickhen/folly,gaoyingie/folly,bikong2/folly,mqeizi/folly,brunomorishita/folly,reddit/folly,sonnyhu/folly,sonnyhu/folly,Eagle-X/folly,hongliangzhao/folly,floxard/folly,renyinew/folly,PoisonBOx/folly,bsampath/folly,CJstar/folly,charsyam/folly,floxard/folly,loverszhaokai/folly,loversInJapan/folly,clearlinux/folly,leolujuyi/folly,theiver9827/folly,guker/folly,alexst07/folly,stonegithubs/folly,hongliangzhao/folly,Orvid/folly,juniway/folly,romange/folly,clearlylin/folly,doctaweeks/folly,facebook/folly,gaoyingie/folly,doctaweeks/folly,alexst07/folly,loverszhaokai/folly,juniway/folly,juniway/folly,stonegithubs/folly,bowlofstew/folly,arg0/folly,PPC64/folly,charsyam/folly,leolujuyi/folly,floxard/folly,KSreeHarsha/folly,tomhughes/folly,bobegir/folly,Orvid/folly,cole14/folly,SeanRBurton/folly,chjp2046/folly,upsoft/folly,loverszhaokai/folly,wildinto/folly,upsoft/folly,raphaelamorim/folly,PPC64/folly,facebook/folly,gavioto/folly,guker/folly,arg0/folly,brunomorishita/folly,kernelim/folly,leolujuyi/folly,clearlylin/folly,cole14/folly,project-zerus/folly,zhiweicai/folly,shaobz/folly,bobegir/folly,constantine001/folly,ykarlsbrun/folly,chjp2046/folly,mqeizi/folly,theiver9827/folly,reddit/folly,tomhughes/folly,tempbottle/folly,bowlofstew/folly,nickhen/folly,cole14/folly,raphaelamorim/folly,constantine001/folly,facebook/folly,Eagle-X/folly,gaoyingie/folly,leolujuyi/folly,facebook/folly,shaobz/folly,hongliangzhao/folly,fw1121/folly,Hincoin/folly,gavioto/folly,SeanRBurton/folly,Hincoin/folly,project-zerus/folly,xzmagic/folly,brunomorishita/folly,alexst07/folly,project-zerus/folly,chjp2046/folly,shaobz/folly,shaobz/folly,ykarlsbrun/folly,doctaweeks/folly,sakishum/folly,PPC64/folly,xzmagic/folly,lifei/folly,constantine001/folly,loverszhaokai/folly,tempbottle/folly,loverszhaokai/folly,charsyam/folly,renyinew/folly,sakishum/folly,cppfool/folly,CJstar/folly,SammyK/folly,arg0/folly,project-zerus/folly,sonnyhu/folly,facebook/folly,Hincoin/folly,clearlylin/folly,PPC64/folly,yangjin-unique/folly,colemancda/folly,wildinto/folly,sakishum/folly,KSreeHarsha/folly,KSreeHarsha/folly,zhiweicai/folly