Modify overinstall flow for Google Cloud Printer to uninstall any previous version before installing. The new flow retrieves the location of the uninstall exe from the registry and copies it to a temp location.  It marks the temp uninstaller for deletion on reboot and then launches it and waits for it to exit. Installation will proceed if there was no previous install or the uninstall succeeded.
Modify overinstall flow for Google Cloud Printer to uninstall any previous version before installing.
The new flow retrieves the location of the uninstall exe from the registry and copies it to a temp location.  It marks the temp uninstaller for deletion on reboot and then launches it and waits for it to exit.
Installation will proceed if there was no previous install or the uninstall succeeded.

BUG=123091
TEST=Verify 123091


Review URL: http://codereview.chromium.org/10054040

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@132037 0039d316-1c4b-4281-b951-d872f2087c98

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