Fix build with -Duse_system_icu=1 and libicu-4.4.*
Fix build with -Duse_system_icu=1 and libicu-4.4.*

UBreakIterator is a struct in newer versions of libicu; must explicitly
cast iter_, which is defined as a void*. Failing to do so causes gcc to complain about implicitly converting from a void*.

Contributed by Mike Gilbert <floppymaster@gmail.com>. Original review: http://codereview.chromium.org/6047001

BUG=None
TEST=Build with -Duse_system_icu=1

Review URL: http://codereview.chromium.org/6015003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@69713 0039d316-1c4b-4281-b951-d872f2087c98

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