Revert 264433 "Roll libvpx 263116:264320"
Revert 264433 "Roll libvpx 263116:264320"

This is a speculative revert of a libvpx roll to unblock dev release.

BUG=366025

> Roll libvpx 263116:264320
> 
> Enable AVX2 code:
> https://codereview.chromium.org/236183003
> 
> Fix Win build issues:
> https://codereview.chromium.org/239003004
> 
> Leave AVX2 ready but off:
> https://codereview.chromium.org/240153006
> 
> Remove all the AVX2 references:
> https://codereview.chromium.org/240113008
> 
> Review URL: https://codereview.chromium.org/236263002

TBR=johannkoenig@google.com

Review URL: https://codereview.chromium.org/252003003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@266500 0039d316-1c4b-4281-b951-d872f2087c98

TheTypoMaster/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,ltilve/chromium,M4sse/chromium.src,axinging/chromium-crosswalk,Just-D/chromium-1,chuan9/chromium-crosswalk,bright-sparks/chromium-spacewalk,Fireblend/chromium-crosswalk,dushu1203/chromium.src,ltilve/chromium,Jonekee/chromium.src,hgl888/chromium-crosswalk-efl,dushu1203/chromium.src,hgl888/chromium-crosswalk,Pluto-tv/chromium-crosswalk,ltilve/chromium,Just-D/chromium-1,markYoungH/chromium.src,littlstar/chromium.src,dushu1203/chromium.src,Jonekee/chromium.src,Just-D/chromium-1,jaruba/chromium.src,krieger-od/nwjs_chromium.src,Fireblend/chromium-crosswalk,bright-sparks/chromium-spacewalk,M4sse/chromium.src,ondra-novak/chromium.src,krieger-od/nwjs_chromium.src,markYoungH/chromium.src,Chilledheart/chromium,dednal/chromium.src,PeterWangIntel/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,ltilve/chromium,Pluto-tv/chromium-crosswalk,hgl888/chromium-crosswalk,Fireblend/chromium-crosswalk,krieger-od/nwjs_chromium.src,ondra-novak/chromium.src,dednal/chromium.src,M4sse/chromium.src,Chilledheart/chromium,axinging/chromium-crosswalk,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,dednal/chromium.src,axinging/chromium-crosswalk,dednal/chromium.src,crosswalk-project/chromium-crosswalk-efl,fujunwei/chromium-crosswalk,jaruba/chromium.src,krieger-od/nwjs_chromium.src,Pluto-tv/chromium-crosswalk,chuan9/chromium-crosswalk,hgl888/chromium-crosswalk-efl,markYoungH/chromium.src,crosswalk-project/chromium-crosswalk-efl,TheTypoMaster/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,ondra-novak/chromium.src,M4sse/chromium.src,fujunwei/chromium-crosswalk,bright-sparks/chromium-spacewalk,ondra-novak/chromium.src,PeterWangIntel/chromium-crosswalk,hgl888/chromium-crosswalk-efl,jaruba/chromium.src,hgl888/chromium-crosswalk-efl,jaruba/chromium.src,hgl888/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,markYoungH/chromium.src,crosswalk-project/chromium-crosswalk-efl,axinging/chromium-crosswalk,ondra-novak/chromium.src,dednal/chromium.src,ltilve/chromium,Fireblend/chromium-crosswalk,Just-D/chromium-1,markYoungH/chromium.src,bright-sparks/chromium-spacewalk,Fireblend/chromium-crosswalk,ondra-novak/chromium.src,Jonekee/chromium.src,axinging/chromium-crosswalk,ondra-novak/chromium.src,dushu1203/chromium.src,dushu1203/chromium.src,chuan9/chromium-crosswalk,chuan9/chromium-crosswalk,chuan9/chromium-crosswalk,fujunwei/chromium-crosswalk,Pluto-tv/chromium-crosswalk,dushu1203/chromium.src,mohamed--abdel-maksoud/chromium.src,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,mohamed--abdel-maksoud/chromium.src,Jonekee/chromium.src,mohamed--abdel-maksoud/chromium.src,jaruba/chromium.src,axinging/chromium-crosswalk,Just-D/chromium-1,Just-D/chromium-1,Chilledheart/chromium,dednal/chromium.src,mohamed--abdel-maksoud/chromium.src,dushu1203/chromium.src,krieger-od/nwjs_chromium.src,littlstar/chromium.src,ltilve/chromium,M4sse/chromium.src,hgl888/chromium-crosswalk-efl,krieger-od/nwjs_chromium.src,dednal/chromium.src,Pluto-tv/chromium-crosswalk,Pluto-tv/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,ondra-novak/chromium.src,fujunwei/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,chuan9/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,M4sse/chromium.src,dednal/chromium.src,krieger-od/nwjs_chromium.src,Jonekee/chromium.src,dednal/chromium.src,Fireblend/chromium-crosswalk,markYoungH/chromium.src,ltilve/chromium,mohamed--abdel-maksoud/chromium.src,littlstar/chromium.src,dushu1203/chromium.src,M4sse/chromium.src,hgl888/chromium-crosswalk,axinging/chromium-crosswalk,M4sse/chromium.src,Fireblend/chromium-crosswalk,Fireblend/chromium-crosswalk,Jonekee/chromium.src,hgl888/chromium-crosswalk-efl,Jonekee/chromium.src,markYoungH/chromium.src,Chilledheart/chromium,fujunwei/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,jaruba/chromium.src,krieger-od/nwjs_chromium.src,crosswalk-project/chromium-crosswalk-efl,TheTypoMaster/chromium-crosswalk,hgl888/chromium-crosswalk,krieger-od/nwjs_chromium.src,markYoungH/chromium.src,ltilve/chromium,hgl888/chromium-crosswalk,Just-D/chromium-1,Jonekee/chromium.src,ltilve/chromium,mohamed--abdel-maksoud/chromium.src,Just-D/chromium-1,dednal/chromium.src,fujunwei/chromium-crosswalk,M4sse/chromium.src,krieger-od/nwjs_chromium.src,Fireblend/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Jonekee/chromium.src,markYoungH/chromium.src,PeterWangIntel/chromium-crosswalk,hgl888/chromium-crosswalk-efl,littlstar/chromium.src,bright-sparks/chromium-spacewalk,krieger-od/nwjs_chromium.src,M4sse/chromium.src,fujunwei/chromium-crosswalk,axinging/chromium-crosswalk,bright-sparks/chromium-spacewalk,PeterWangIntel/chromium-crosswalk,jaruba/chromium.src,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,TheTypoMaster/chromium-crosswalk,dushu1203/chromium.src,Chilledheart/chromium,axinging/chromium-crosswalk,dushu1203/chromium.src,mohamed--abdel-maksoud/chromium.src,PeterWangIntel/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,bright-sparks/chromium-spacewalk,littlstar/chromium.src,bright-sparks/chromium-spacewalk,ondra-novak/chromium.src,axinging/chromium-crosswalk,markYoungH/chromium.src,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,jaruba/chromium.src,axinging/chromium-crosswalk,Jonekee/chromium.src,hgl888/chromium-crosswalk-efl,Chilledheart/chromium,littlstar/chromium.src,M4sse/chromium.src,chuan9/chromium-crosswalk,Jonekee/chromium.src,hgl888/chromium-crosswalk-efl,bright-sparks/chromium-spacewalk,dushu1203/chromium.src,TheTypoMaster/chromium-crosswalk,hgl888/chromium-crosswalk,hgl888/chromium-crosswalk,chuan9/chromium-crosswalk,markYoungH/chromium.src,crosswalk-project/chromium-crosswalk-efl,crosswalk-project/chromium-crosswalk-efl,fujunwei/chromium-crosswalk,chuan9/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,TheTypoMaster/chromium-crosswalk,hgl888/chromium-crosswalk,littlstar/chromium.src,mohamed--abdel-maksoud/chromium.src,fujunwei/chromium-crosswalk,dednal/chromium.src,Chilledheart/chromium,littlstar/chromium.src,jaruba/chromium.src,Chilledheart/chromium,hgl888/chromium-crosswalk-efl