roll to ffmpeg removing empty files that are no longer needed to fool build bots into deleting files.  BUG=57054, 56628 TEST=build ffmpeg from tar and patches 
roll to ffmpeg removing empty files that are no longer needed to fool build bots into deleting files. 
BUG=57054, 56628
TEST=build ffmpeg from tar and patches 

Review URL: http://codereview.chromium.org/3472018

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@60667 0039d316-1c4b-4281-b951-d872f2087c98

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