avatar menu: Fix the use of enter/exit event notifications.
avatar menu: Fix the use of enter/exit event notifications.

When the mouse moves from the menu item (ProfileItemView) into the 'edit'
link (EditProfileLink), the menu item receives a mouse-exit event before
the edit-link receives the mouse-enter event. But the menu item hides the
edit-link immediately on mouse-exit event, resulting in the edit link
being hidden. So make sure when the mouse moves from the menu-item into
the edit link, the menu does not receive an exit event.

BUG=177087

Review URL: https://codereview.chromium.org/12310084

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@184470 0039d316-1c4b-4281-b951-d872f2087c98

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