Fix new leak in LauncherButton Fixes http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20OS%20UI%20%28valgrind%29%288%29/builds/1350/steps/memory%20test%3A%20unit/logs/A101C11CC97B99B5
Fix new leak in LauncherButton
Fixes http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20OS%20UI%20%28valgrind%29%288%29/builds/1350/steps/memory%20test%3A%20unit/logs/A101C11CC97B99B5

BUG=None
TEST=None
TBR=sky

Review URL: https://chromiumcodereview.appspot.com/9663041

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@126044 0039d316-1c4b-4281-b951-d872f2087c98

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