Add Unicode support to ibus_input_method.cc.
Add Unicode support to ibus_input_method.cc.

We should copy |character_| and |unmodified_| character values to the PengingKeyEvent object so that we can type Unicode characters (>= 0x80) even when ibus-daemon is running.

BUG=None (internal bug)
TEST=manually done: login, switch to the French virtual keyboard, press Shift, press More, then press √, ÷, etc.

Review URL: http://codereview.chromium.org/7599022

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@97303 0039d316-1c4b-4281-b951-d872f2087c98

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