Makes canvas_paint_linux use the event region, not the event rectangle. This is needed as gtk/gdk may set complex clips, so that if we paint everything we can end up painting on top of other widgets.
Makes canvas_paint_linux use the event region, not the event
rectangle. This is needed as gtk/gdk may set complex clips, so that if
we paint everything we can end up painting on top of other widgets.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/242134

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@27995 0039d316-1c4b-4281-b951-d872f2087c98

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