Linux: use -Wl,--no-as-needed on 32-bit builders.
Linux: use -Wl,--no-as-needed on 32-bit builders.

This is needed to fix a linking error on Ubuntu Precise:
/usr/bin/ld: out/Debug/obj.target/sync/libsync.so: undefined reference to symbol 'SSL_ExportKeyingMaterial'
/usr/bin/ld: note: 'SSL_ExportKeyingMaterial' is defined in DSO out/Debug/obj.target/net/third_party/nss/libcrssl.so so try adding it to the linker command line
out/Debug/obj.target/net/third_party/nss/libcrssl.so: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make: *** [out/Debug/unit_tests] Error 1

TBR=thestig

BUG=170262

Review URL: https://codereview.chromium.org/12633012

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@187181 0039d316-1c4b-4281-b951-d872f2087c98

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