Use HiDPI app icons on CrOS when a theme is present.
Use HiDPI app icons on CrOS when a theme is present.

BUG=140931
Test=Manual
Run Chrome using --force-device-scale-factor=2
Change theme.
Close chrome and restart.
Ensure that the app icons use hidpi images.

TBR=sky, erg

Review URL: https://chromiumcodereview.appspot.com/10832313

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@151703 0039d316-1c4b-4281-b951-d872f2087c98

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