The background is that we are to enable hardfp build for  chrome browser.
The background is that we are to enable hardfp build for  chrome browser.

Currently, the '-mfloat-abi=soft' is hard coded in the gyp file, but what we need is "-mfloat-abi=hard", since it is hard-coded, we no way to change it.

So this CL removed this hard-coded value, replaced it with variable arm_float_abi, which has a default value of 'soft'.   Later in the ebuild file, we can easily override this value to be 'hard', thus make the build hardfp.

BUG=None
TEST=build manually in chromium


Review URL: http://codereview.chromium.org/10351018

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@135388 0039d316-1c4b-4281-b951-d872f2087c98

hgl888/chromium-crosswalk,Jonekee/chromium.src,Chilledheart/chromium,timopulkkinen/BubbleFish,axinging/chromium-crosswalk,axinging/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,robclark/chromium,mogoweb/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,hujiajie/pa-chromium,robclark/chromium,nacl-webkit/chrome_deps,pozdnyakov/chromium-crosswalk,zcbenz/cefode-chromium,hujiajie/pa-chromium,pozdnyakov/chromium-crosswalk,littlstar/chromium.src,anirudhSK/chromium,junmin-zhu/chromium-rivertrail,hgl888/chromium-crosswalk,ltilve/chromium,krieger-od/nwjs_chromium.src,hujiajie/pa-chromium,littlstar/chromium.src,zcbenz/cefode-chromium,crosswalk-project/chromium-crosswalk-efl,ltilve/chromium,markYoungH/chromium.src,timopulkkinen/BubbleFish,mohamed--abdel-maksoud/chromium.src,littlstar/chromium.src,robclark/chromium,ltilve/chromium,krieger-od/nwjs_chromium.src,crosswalk-project/chromium-crosswalk-efl,M4sse/chromium.src,keishi/chromium,Pluto-tv/chromium-crosswalk,Jonekee/chromium.src,junmin-zhu/chromium-rivertrail,keishi/chromium,axinging/chromium-crosswalk,dushu1203/chromium.src,Fireblend/chromium-crosswalk,timopulkkinen/BubbleFish,fujunwei/chromium-crosswalk,M4sse/chromium.src,pozdnyakov/chromium-crosswalk,junmin-zhu/chromium-rivertrail,zcbenz/cefode-chromium,TheTypoMaster/chromium-crosswalk,axinging/chromium-crosswalk,ltilve/chromium,littlstar/chromium.src,ondra-novak/chromium.src,nacl-webkit/chrome_deps,timopulkkinen/BubbleFish,markYoungH/chromium.src,dushu1203/chromium.src,dushu1203/chromium.src,krieger-od/nwjs_chromium.src,TheTypoMaster/chromium-crosswalk,bright-sparks/chromium-spacewalk,M4sse/chromium.src,bright-sparks/chromium-spacewalk,Just-D/chromium-1,hgl888/chromium-crosswalk-efl,hgl888/chromium-crosswalk-efl,junmin-zhu/chromium-rivertrail,hgl888/chromium-crosswalk,Chilledheart/chromium,robclark/chromium,axinging/chromium-crosswalk,jaruba/chromium.src,Just-D/chromium-1,markYoungH/chromium.src,nacl-webkit/chrome_deps,crosswalk-project/chromium-crosswalk-efl,robclark/chromium,ChromiumWebApps/chromium,mogoweb/chromium-crosswalk,Pluto-tv/chromium-crosswalk,keishi/chromium,PeterWangIntel/chromium-crosswalk,chuan9/chromium-crosswalk,dednal/chromium.src,patrickm/chromium.src,littlstar/chromium.src,axinging/chromium-crosswalk,ondra-novak/chromium.src,krieger-od/nwjs_chromium.src,junmin-zhu/chromium-rivertrail,chuan9/chromium-crosswalk,chuan9/chromium-crosswalk,bright-sparks/chromium-spacewalk,junmin-zhu/chromium-rivertrail,TheTypoMaster/chromium-crosswalk,M4sse/chromium.src,hgl888/chromium-crosswalk-efl,Fireblend/chromium-crosswalk,M4sse/chromium.src,chuan9/chromium-crosswalk,bright-sparks/chromium-spacewalk,hgl888/chromium-crosswalk,ChromiumWebApps/chromium,pozdnyakov/chromium-crosswalk,anirudhSK/chromium,patrickm/chromium.src,Fireblend/chromium-crosswalk,hgl888/chromium-crosswalk,nacl-webkit/chrome_deps,markYoungH/chromium.src,jaruba/chromium.src,Chilledheart/chromium,ondra-novak/chromium.src,junmin-zhu/chromium-rivertrail,hgl888/chromium-crosswalk-efl,timopulkkinen/BubbleFish,markYoungH/chromium.src,fujunwei/chromium-crosswalk,Jonekee/chromium.src,TheTypoMaster/chromium-crosswalk,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,dushu1203/chromium.src,mohamed--abdel-maksoud/chromium.src,mohamed--abdel-maksoud/chromium.src,ltilve/chromium,patrickm/chromium.src,PeterWangIntel/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Jonekee/chromium.src,crosswalk-project/chromium-crosswalk-efl,dednal/chromium.src,Just-D/chromium-1,Jonekee/chromium.src,pozdnyakov/chromium-crosswalk,ChromiumWebApps/chromium,jaruba/chromium.src,hgl888/chromium-crosswalk-efl,ChromiumWebApps/chromium,anirudhSK/chromium,patrickm/chromium.src,hgl888/chromium-crosswalk-efl,junmin-zhu/chromium-rivertrail,axinging/chromium-crosswalk,Jonekee/chromium.src,mohamed--abdel-maksoud/chromium.src,zcbenz/cefode-chromium,nacl-webkit/chrome_deps,mogoweb/chromium-crosswalk,Chilledheart/chromium,nacl-webkit/chrome_deps,anirudhSK/chromium,dushu1203/chromium.src,hgl888/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,timopulkkinen/BubbleFish,dushu1203/chromium.src,markYoungH/chromium.src,zcbenz/cefode-chromium,hujiajie/pa-chromium,PeterWangIntel/chromium-crosswalk,dushu1203/chromium.src,Fireblend/chromium-crosswalk,hujiajie/pa-chromium,fujunwei/chromium-crosswalk,pozdnyakov/chromium-crosswalk,nacl-webkit/chrome_deps,robclark/chromium,PeterWangIntel/chromium-crosswalk,keishi/chromium,mogoweb/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,dednal/chromium.src,zcbenz/cefode-chromium,bright-sparks/chromium-spacewalk,Just-D/chromium-1,mohamed--abdel-maksoud/chromium.src,axinging/chromium-crosswalk,mogoweb/chromium-crosswalk,ondra-novak/chromium.src,jaruba/chromium.src,robclark/chromium,anirudhSK/chromium,krieger-od/nwjs_chromium.src,Jonekee/chromium.src,zcbenz/cefode-chromium,anirudhSK/chromium,hgl888/chromium-crosswalk,hujiajie/pa-chromium,ondra-novak/chromium.src,ChromiumWebApps/chromium,bright-sparks/chromium-spacewalk,hgl888/chromium-crosswalk-efl,mohamed--abdel-maksoud/chromium.src,fujunwei/chromium-crosswalk,chuan9/chromium-crosswalk,keishi/chromium,markYoungH/chromium.src,Just-D/chromium-1,krieger-od/nwjs_chromium.src,anirudhSK/chromium,hujiajie/pa-chromium,ltilve/chromium,littlstar/chromium.src,mohamed--abdel-maksoud/chromium.src,keishi/chromium,Chilledheart/chromium,fujunwei/chromium-crosswalk,chuan9/chromium-crosswalk,keishi/chromium,ChromiumWebApps/chromium,junmin-zhu/chromium-rivertrail,junmin-zhu/chromium-rivertrail,krieger-od/nwjs_chromium.src,timopulkkinen/BubbleFish,jaruba/chromium.src,chuan9/chromium-crosswalk,dushu1203/chromium.src,bright-sparks/chromium-spacewalk,mogoweb/chromium-crosswalk,fujunwei/chromium-crosswalk,hgl888/chromium-crosswalk-efl,jaruba/chromium.src,PeterWangIntel/chromium-crosswalk,dednal/chromium.src,Jonekee/chromium.src,anirudhSK/chromium,hgl888/chromium-crosswalk-efl,jaruba/chromium.src,ChromiumWebApps/chromium,zcbenz/cefode-chromium,Pluto-tv/chromium-crosswalk,timopulkkinen/BubbleFish,dednal/chromium.src,dednal/chromium.src,hgl888/chromium-crosswalk-efl,Chilledheart/chromium,fujunwei/chromium-crosswalk,Just-D/chromium-1,robclark/chromium,pozdnyakov/chromium-crosswalk,nacl-webkit/chrome_deps,jaruba/chromium.src,Fireblend/chromium-crosswalk,markYoungH/chromium.src,axinging/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,patrickm/chromium.src,fujunwei/chromium-crosswalk,jaruba/chromium.src,chuan9/chromium-crosswalk,keishi/chromium,chuan9/chromium-crosswalk,bright-sparks/chromium-spacewalk,pozdnyakov/chromium-crosswalk,Pluto-tv/chromium-crosswalk,ChromiumWebApps/chromium,crosswalk-project/chromium-crosswalk-efl,anirudhSK/chromium,mogoweb/chromium-crosswalk,hgl888/chromium-crosswalk,bright-sparks/chromium-spacewalk,axinging/chromium-crosswalk,nacl-webkit/chrome_deps,hujiajie/pa-chromium,Just-D/chromium-1,dednal/chromium.src,krieger-od/nwjs_chromium.src,dushu1203/chromium.src,nacl-webkit/chrome_deps,ltilve/chromium,pozdnyakov/chromium-crosswalk,M4sse/chromium.src,Jonekee/chromium.src,TheTypoMaster/chromium-crosswalk,M4sse/chromium.src,mogoweb/chromium-crosswalk,patrickm/chromium.src,Chilledheart/chromium,timopulkkinen/BubbleFish,Pluto-tv/chromium-crosswalk,ondra-novak/chromium.src,littlstar/chromium.src,keishi/chromium,mohamed--abdel-maksoud/chromium.src,Fireblend/chromium-crosswalk,ChromiumWebApps/chromium,PeterWangIntel/chromium-crosswalk,M4sse/chromium.src,nacl-webkit/chrome_deps,Fireblend/chromium-crosswalk,ondra-novak/chromium.src,anirudhSK/chromium,robclark/chromium,krieger-od/nwjs_chromium.src,markYoungH/chromium.src,crosswalk-project/chromium-crosswalk-efl,dushu1203/chromium.src,markYoungH/chromium.src,timopulkkinen/BubbleFish,ChromiumWebApps/chromium,krieger-od/nwjs_chromium.src,Fireblend/chromium-crosswalk,hujiajie/pa-chromium,dednal/chromium.src,TheTypoMaster/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,hujiajie/pa-chromium,zcbenz/cefode-chromium,keishi/chromium,littlstar/chromium.src,Jonekee/chromium.src,pozdnyakov/chromium-crosswalk,dednal/chromium.src,mohamed--abdel-maksoud/chromium.src,ltilve/chromium,Fireblend/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,ChromiumWebApps/chromium,ChromiumWebApps/chromium,Just-D/chromium-1,krieger-od/nwjs_chromium.src,patrickm/chromium.src,ondra-novak/chromium.src,patrickm/chromium.src,anirudhSK/chromium,crosswalk-project/chromium-crosswalk-efl,hgl888/chromium-crosswalk,M4sse/chromium.src,pozdnyakov/chromium-crosswalk,dushu1203/chromium.src,ondra-novak/chromium.src,fujunwei/chromium-crosswalk,dednal/chromium.src,zcbenz/cefode-chromium,jaruba/chromium.src,M4sse/chromium.src,junmin-zhu/chromium-rivertrail,mogoweb/chromium-crosswalk,Chilledheart/chromium,Chilledheart/chromium,timopulkkinen/BubbleFish,robclark/chromium,zcbenz/cefode-chromium,Just-D/chromium-1,anirudhSK/chromium,Pluto-tv/chromium-crosswalk,mogoweb/chromium-crosswalk,ltilve/chromium,crosswalk-project/chromium-crosswalk-efl,Pluto-tv/chromium-crosswalk,markYoungH/chromium.src,Jonekee/chromium.src,M4sse/chromium.src,TheTypoMaster/chromium-crosswalk,jaruba/chromium.src,patrickm/chromium.src,hujiajie/pa-chromium,keishi/chromium,dednal/chromium.src