make: Move more path / env logic into XcodeSettings. Review URL: http://codereview.chromium.org/7522026
make: Move more path / env logic into XcodeSettings.
Review URL: http://codereview.chromium.org/7522026

git-svn-id: e7e1075985beda50ea81ac4472467b4f6e91fc78@981 78cadc50-ecff-11dd-a971-7dbc132099af

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