Revert of tidy up chromeos_setup.sh (patchset #1 id:1 of https://codereview.chromium.org/1051253002/)
Revert of tidy up chromeos_setup.sh (patchset #1 id:1 of https://codereview.chromium.org/1051253002/)

Reason for revert:
arm_thumb not defined

Original issue's description:
> tidy up chromeos_setup.sh
>
> - remove unused alex
> - streamline Link's config
> - remove misleading Daisy config:
>   1) armv7=1 does nothing.  We meant to type arm_version=7 here.
>   2) arm_neon=1 does nothing unless arm_version == 7.
>   3) arm_thumb=0 is the default when arm_version <= 7.
>   4) skia_arch_width=32 is the default when skia_arch_type=arm.
>
> I'd just fix this to make Daisy arm_version=7 and arm_neon=1 (and
> arm_thumb=1, which I'm going to separately make the default for
> arm_version=7), but there are known color-order bugs with our
> NEON procs that would make Daisy start pushing bad images to
> Gold.  Going to take baby steps here...
>
> BUG=skia:1843
>
> Committed: https://skia.googlesource.com/skia/+/3c2809bc612f4a265770914f860d214c9665dc4a

TBR=borenet@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:1843

Review URL: https://codereview.chromium.org/1059443002

TeamExodus/external_skia,pcwalton/skia,pcwalton/skia,AOSP-YU/platform_external_skia,todotodoo/skia,qrealka/skia-hc,geekboxzone/mmallow_external_skia,MarshedOut/android_external_skia,TeamTwisted/external_skia,MonkeyZZZZ/platform_external_skia,TeamTwisted/external_skia,UBERMALLOW/external_skia,YUPlayGodDev/platform_external_skia,ominux/skia,YUPlayGodDev/platform_external_skia,spezi77/android_external_skia,PAC-ROM/android_external_skia,MarshedOut/android_external_skia,Jichao/skia,MinimalOS-AOSP/platform_external_skia,qrealka/skia-hc,pcwalton/skia,noselhq/skia,TeamTwisted/external_skia,invisiblek/android_external_skia,spezi77/android_external_skia,noselhq/skia,AOSP-YU/platform_external_skia,MinimalOS-AOSP/platform_external_skia,UBERMALLOW/external_skia,UBERMALLOW/external_skia,vanish87/skia,qrealka/skia-hc,geekboxzone/mmallow_external_skia,rubenvb/skia,pcwalton/skia,vanish87/skia,PAC-ROM/android_external_skia,geekboxzone/mmallow_external_skia,OneRom/external_skia,w3nd1go/android_external_skia,shahrzadmn/skia,ominux/skia,noselhq/skia,HalCanary/skia-hc,tmpvar/skia.cc,google/skia,pcwalton/skia,amyvmiwei/skia,TeamExodus/external_skia,rubenvb/skia,OneRom/external_skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,qrealka/skia-hc,tmpvar/skia.cc,w3nd1go/android_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,Infinitive-OS/platform_external_skia,timduru/platform-external-skia,VRToxin-AOSP/android_external_skia,timduru/platform-external-skia,vanish87/skia,MonkeyZZZZ/platform_external_skia,boulzordev/android_external_skia,MonkeyZZZZ/platform_external_skia,geekboxzone/mmallow_external_skia,AOSPB/external_skia,UBERMALLOW/external_skia,rubenvb/skia,nfxosp/platform_external_skia,HalCanary/skia-hc,vanish87/skia,Jichao/skia,TeamTwisted/external_skia,HalCanary/skia-hc,rubenvb/skia,pcwalton/skia,pcwalton/skia,tmpvar/skia.cc,AOSP-YU/platform_external_skia,AOSP-YU/platform_external_skia,invisiblek/android_external_skia,tmpvar/skia.cc,timduru/platform-external-skia,BrokenROM/external_skia,MonkeyZZZZ/platform_external_skia,nvoron23/skia,google/skia,UBERMALLOW/external_skia,UBERMALLOW/external_skia,MonkeyZZZZ/platform_external_skia,Hikari-no-Tenshi/android_external_skia,MinimalOS-AOSP/platform_external_skia,boulzordev/android_external_skia,vanish87/skia,TeamTwisted/external_skia,spezi77/android_external_skia,Infinitive-OS/platform_external_skia,todotodoo/skia,OneRom/external_skia,boulzordev/android_external_skia,shahrzadmn/skia,nvoron23/skia,YUPlayGodDev/platform_external_skia,vanish87/skia,BrokenROM/external_skia,timduru/platform-external-skia,todotodoo/skia,BrokenROM/external_skia,boulzordev/android_external_skia,nvoron23/skia,UBERMALLOW/external_skia,TeamTwisted/external_skia,Jichao/skia,aosp-mirror/platform_external_skia,OneRom/external_skia,MonkeyZZZZ/platform_external_skia,YUPlayGodDev/platform_external_skia,google/skia,amyvmiwei/skia,shahrzadmn/skia,aosp-mirror/platform_external_skia,w3nd1go/android_external_skia,tmpvar/skia.cc,TeamExodus/external_skia,boulzordev/android_external_skia,AOSPB/external_skia,google/skia,geekboxzone/mmallow_external_skia,invisiblek/android_external_skia,AOSP-YU/platform_external_skia,nvoron23/skia,VRToxin-AOSP/android_external_skia,nfxosp/platform_external_skia,vanish87/skia,ominux/skia,shahrzadmn/skia,OneRom/external_skia,Infinitive-OS/platform_external_skia,rubenvb/skia,amyvmiwei/skia,ominux/skia,nfxosp/platform_external_skia,shahrzadmn/skia,rubenvb/skia,rubenvb/skia,MarshedOut/android_external_skia,invisiblek/android_external_skia,qrealka/skia-hc,PAC-ROM/android_external_skia,vanish87/skia,aosp-mirror/platform_external_skia,spezi77/android_external_skia,VRToxin-AOSP/android_external_skia,vanish87/skia,VRToxin-AOSP/android_external_skia,YUPlayGodDev/platform_external_skia,AOSPB/external_skia,YUPlayGodDev/platform_external_skia,qrealka/skia-hc,AOSP-YU/platform_external_skia,amyvmiwei/skia,google/skia,BrokenROM/external_skia,rubenvb/skia,shahrzadmn/skia,UBERMALLOW/external_skia,Jichao/skia,rubenvb/skia,amyvmiwei/skia,nfxosp/platform_external_skia,Hikari-no-Tenshi/android_external_skia,w3nd1go/android_external_skia,amyvmiwei/skia,todotodoo/skia,AOSPB/external_skia,Infinitive-OS/platform_external_skia,Jichao/skia,MinimalOS-AOSP/platform_external_skia,noselhq/skia,timduru/platform-external-skia,noselhq/skia,tmpvar/skia.cc,pcwalton/skia,TeamExodus/external_skia,YUPlayGodDev/platform_external_skia,w3nd1go/android_external_skia,nvoron23/skia,Jichao/skia,MonkeyZZZZ/platform_external_skia,google/skia,qrealka/skia-hc,ominux/skia,Hikari-no-Tenshi/android_external_skia,OneRom/external_skia,tmpvar/skia.cc,Jichao/skia,MinimalOS-AOSP/platform_external_skia,PAC-ROM/android_external_skia,w3nd1go/android_external_skia,YUPlayGodDev/platform_external_skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,pcwalton/skia,UBERMALLOW/external_skia,todotodoo/skia,TeamExodus/external_skia,MinimalOS-AOSP/platform_external_skia,Infinitive-OS/platform_external_skia,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