Reland "views: Refactor AddRemoveNotifications unittest."
Reland "views: Refactor AddRemoveNotifications unittest."

This removes the second definition of the ObserverView class, that was added
by the merge conflict.

This reverts commit 2a16ddfe7e09bec206daf6bdab3ef6d1a573dbfd.

BUG=None
TEST=views_unittests --gtest_filter=ViewTest.ViewHierarchyChanged

TBR=sky@chromium.org

Original Review URL: http://codereview.chromium.org/7184031

Review URL: http://codereview.chromium.org/7206060

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@89947 0039d316-1c4b-4281-b951-d872f2087c98

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