Fix for a renderer crasher related to password autofill. In some cases it seems we have no frame for the text node getting the autofill user selection. Not sure how it can happen. See bug comments for more info.
Fix for a renderer crasher related to password autofill.
In some cases it seems we have no frame for the text node getting the autofill
user selection. Not sure how it can happen.
See bug comments for more info.

BUG=26168
TEST=Make sure password and form autofill still work as expected.

Review URL: http://codereview.chromium.org/378014

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@31270 0039d316-1c4b-4281-b951-d872f2087c98

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