Revert removal of code in gtk_util.cc.
Revert removal of code in gtk_util.cc.

This code was removed as part of the cleanup in http://src.chromium.org/viewvc/chrome?view=rev&revision=73432 but is still needed for native dialogs in Chrome OS.

BUG=chromium-os:11884,chromium-os:11969
TEST=manually on netbook

Review URL: http://codereview.chromium.org/6517005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@74914 0039d316-1c4b-4281-b951-d872f2087c98

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