ninja/mac: Remove mac_tool variable, it wasn't used for anything.
ninja/mac: Remove mac_tool variable, it wasn't used for anything.

No intended behavior change.
Review URL: https://codereview.chromium.org/11305011

git-svn-id: e7e1075985beda50ea81ac4472467b4f6e91fc78@1525 78cadc50-ecff-11dd-a971-7dbc132099af

mkrautz/gyp-libmumble,bpsinc-native/src_tools_gyp,adblockplus/gyp,okwasi/gyp,springmeyer/gyp,kevinchen3315/gyp-git,Jack-Q/GYP-copy,ttyangf/pdfium_gyp,AOSPU/external_chromium_org_tools_gyp,Phuehvk/gyp,ttyangf/gyp,sloanyang/gyp,Jack-Q/GYP-copy,azunite/gyp,LazyCodingCat/gyp,pandaxcl/gyp,android-ia/platform_external_chromium_org_tools_gyp,enkripsi/gyp,chromium/gyp,kevinchen3315/gyp-git,azunite/gyp_20150930,sanyaade-teachings/gyp,okwasi/gyp,yangrongwei/gyp,Danath/gyp,azunite/gyp,Jack-Q/GYP-copy,Jack-Q/GYP-copy,msc-/gyp,duanhjlt/gyp,bnoordhuis/gyp,chromium/gyp,bnoordhuis/gyp,Phuehvk/gyp,android-ia/platform_external_chromium_org_tools_gyp,ttyangf/pdfium_gyp,turbulenz/gyp,saghul/gyn,dougbeal/gyp,adblockplus/gyp,bnoordhuis/gyp,amoikevin/gyp,Danath/gyp,Omegaphora/external_chromium_org_tools_gyp,msc-/gyp,openpeer/webrtc-gyp,ryfx/gyp,mgamer/gyp,xin3liang/platform_external_chromium_org_tools_gyp,okumura/gyp,LazyCodingCat/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,brson/gyp,amoikevin/gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,lukeweber/gyp-override,enkripsi/gyp,sdklite/gyp,cchamberlain/gyp,mapbox/gyp,omasanori/gyp,springmeyer/gyp,lukeweber/gyp-override,yinquan529/platform-external-chromium_org-tools-gyp,bnq4ever/gypgoogle,sdklite/gyp,sdklite/gyp,ttyangf/gyp,AOSPU/external_chromium_org_tools_gyp,LazyCodingCat/gyp,omasanori/gyp,adblockplus/gyp,brson/gyp,openpeer/webrtc-gyp,pyokagan/gyp,duanhjlt/gyp,clar/gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,trafi/gyp,tarc/gyp,clar/gyp,bdarnell/gyp,channing/gyp,ttyangf/gyp,bdarnell/gyp,carlTLR/gyp,xin3liang/platform_external_chromium_org_tools_gyp,ttyangf/pdfium_gyp,azunite/gyp,Danath/gyp,bulldy80/gyp_unofficial,bdarnell/gyp,adblockplus/gyp,alexcrichton/gyp,xin3liang/platform_external_chromium_org_tools_gyp,okumura/gyp,bdarnell/gyp,Danath/gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,Chilledheart/gyp,mistydemeo/gyp,mkrautz/gyp-libmumble,mgamer/gyp,springmeyer/gyp,MIPS/external-chromium_org-tools-gyp,cchamberlain/gyp,luvit/gyp,kevinchen3315/gyp-git,cchamberlain/gyp,bulldy80/gyp_unofficial,sloanyang/gyp,luvit/gyp,mapbox/gyp,pyokagan/gyp,Jack-Q/GYP-copy,channing/gyp,azunite/gyp_20150930,enkripsi/gyp,mgamer/gyp,openpeer/webrtc-gyp,AWhetter/gyp,yjhjstz/gyp,springmeyer/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,yjhjstz/gyp,mistydemeo/gyp,clar/gyp,mumble-voip/libmumble-gyp,yinquan529/platform-external-chromium_org-tools-gyp,mkrautz/gyp-libmumble,yinquan529/platform-external-chromium_org-tools-gyp,turbulenz/gyp,yjhjstz/gyp,turbulenz/gyp,amoikevin/gyp,cchamberlain/gyp,cysp/gyp,openpeer/webrtc-gyp,turbulenz/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,carlTLR/gyp,bnoordhuis/gyp,cchamberlain/gyp,azunite/gyp_20150930,Phuehvk/gyp,pandaxcl/gyp,yjhjstz/gyp,yjhjstz/gyp,ryfx/gyp,azunite/gyp,LazyCodingCat/gyp,bnq4ever/gypgoogle,amoikevin/gyp,bulldy80/gyp_unofficial,Phuehvk/gyp,Phuehvk/gyp,sport-monkey/GYP,trafi/gyp,pyokagan/gyp,xin3liang/platform_external_chromium_org_tools_gyp,sanyaade-teachings/gyp,svn2github/kgyp,Chilledheart/gyp,dougbeal/gyp,okumura/gyp,adblockplus/gyp,svn2github/kgyp,duanhjlt/gyp,bpsinc-native/src_tools_gyp,luvit/gyp,svn2github/gyp,mapbox/gyp,saghul/gyn,sport-monkey/GYP,ryfx/gyp,duanhjlt/gyp,sloanyang/gyp,okwasi/gyp,pandaxcl/gyp,mistydemeo/gyp,okwasi/gyp,AWhetter/gyp,alexcrichton/gyp,msc-/gyp,ttyangf/pdfium_gyp,tarc/gyp,lukeweber/gyp-override,erikge/watch_gyp,cysp/gyp,tarc/gyp,mistydemeo/gyp,yinquan529/platform-external-chromium_org-tools-gyp,carlTLR/gyp,chromium/gyp,duanhjlt/gyp,AOSPU/external_chromium_org_tools_gyp,sport-monkey/GYP,chromium/gyp,alexcrichton/gyp,enkripsi/gyp,azunite/gyp_20150930,sloanyang/gyp,AWhetter/gyp,sport-monkey/GYP,mumble-voip/libmumble-gyp,Omegaphora/external_chromium_org_tools_gyp,android-ia/platform_external_chromium_org_tools_gyp,okumura/gyp,MIPS/external-chromium_org-tools-gyp,ryfx/gyp,cysp/gyp,trafi/gyp,android-ia/platform_external_chromium_org_tools_gyp,yangrongwei/gyp,Omegaphora/external_chromium_org_tools_gyp,turbulenz/gyp,mapbox/gyp,svn2github/kgyp,yangrongwei/gyp,ttyangf/gyp,carlTLR/gyp,AWhetter/gyp,clar/gyp,erikge/watch_gyp,Danath/gyp,saghul/gyn,bnq4ever/gypgoogle,bulldy80/gyp_unofficial,brson/gyp,pandaxcl/gyp,svn2github/kgyp,sdklite/gyp,sanyaade-teachings/gyp,mumble-voip/libmumble-gyp,dougbeal/gyp,svn2github/gyp,channing/gyp,dougbeal/gyp,tarc/gyp,enkripsi/gyp,erikge/watch_gyp,bulldy80/gyp_unofficial,Omegaphora/external_chromium_org_tools_gyp,pyokagan/gyp,sanyaade-teachings/gyp,channing/gyp,AWhetter/gyp,sanyaade-teachings/gyp,mumble-voip/libmumble-gyp,erikge/watch_gyp,bnq4ever/gypgoogle,amoikevin/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,yangrongwei/gyp,dougbeal/gyp,saghul/gyn,pandaxcl/gyp,alexcrichton/gyp,bpsinc-native/src_tools_gyp,svn2github/gyp,ttyangf/gyp,trafi/gyp,MIPS/external-chromium_org-tools-gyp,Chilledheart/gyp,erikge/watch_gyp,msc-/gyp,trafi/gyp,mkrautz/gyp-libmumble,cysp/gyp,svn2github/gyp,mgamer/gyp,azunite/gyp_20150930,sport-monkey/GYP,openpeer/webrtc-gyp,carlTLR/gyp,chromium/gyp,omasanori/gyp,LazyCodingCat/gyp,luvit/gyp,azunite/gyp,svn2github/kgyp,omasanori/gyp,springmeyer/gyp,bnq4ever/gypgoogle,mapbox/gyp,brson/gyp,bpsinc-native/src_tools_gyp,AOSPU/external_chromium_org_tools_gyp,MIPS/external-chromium_org-tools-gyp,ryfx/gyp,msc-/gyp,Chilledheart/gyp,cysp/gyp,Chilledheart/gyp,bnoordhuis/gyp,tarc/gyp,lukeweber/gyp-override,svn2github/gyp,saghul/gyn,kevinchen3315/gyp-git,ttyangf/pdfium_gyp,clar/gyp,mgamer/gyp,pyokagan/gyp,sdklite/gyp