call SpdySession::flow_control() statically, instead of as spdy_session_->flow_control() in spdy_http_stream.cc.
call SpdySession::flow_control() statically, instead of as
spdy_session_->flow_control() in spdy_http_stream.cc.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/5518001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@68021 0039d316-1c4b-4281-b951-d872f2087c98

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