Make gcc 4.1 happy with NULL in EXPECT_EQ.
Make gcc 4.1 happy with NULL in EXPECT_EQ.

This avoids warnings like:
src/base/thread_local_unittest.cc:88: warning: passing NULL to non-pointer argument 3 of 'static testing::AssertionResult testing::internal::EqHelper<true>::Compare(const char*, const char*, const T1&, T2*) [with T1 = int, T2 = <unnamed>::ThreadLocalTesterBase]'

Review URL: http://codereview.chromium.org/226

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@1716 0039d316-1c4b-4281-b951-d872f2087c98

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