Adobe reader actually becomes default browser when user says so!
Adobe reader actually becomes default browser when user says so!


BUG=77856
TEST=
1) Ensure that the chrome pdf viewer plugin is enabled and the adobe reader is disabled.
2) Open a pdf that has to be opened in adobe reader (eg. http://www.irs.gov/pub/irs-pdf/p17.pdf)
3) Agree to open this pdf in adobe reader.  You will also get an option asking if you want adobe reader as your default reader.  Accept.
4) Restart the browser.  Ensure that adobe reader plugin is still your default pdf viewer.

Review URL: http://codereview.chromium.org/7285024

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@92153 0039d316-1c4b-4281-b951-d872f2087c98

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