net: disable revocation checking for connections to HTTPS proxies.
net: disable revocation checking for connections to HTTPS proxies.

When connecting to an HTTPS proxy, trying to do revocation checks (which will
probably need to go through the same proxy) is daft. Also, any attacker
sufficiently close to MITM a connection to a proxy server can very likely also
MITM the revocation checks.

BUG=98833
TEST=none


Review URL: http://codereview.chromium.org/8301001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@106392 0039d316-1c4b-4281-b951-d872f2087c98

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