Revert of Fix typo in install-sysroot.py (patchset #2 id:20001 of https://codereview.chromium.org/1317973005/ )
Revert of Fix typo in install-sysroot.py (patchset #2 id:20001 of https://codereview.chromium.org/1317973005/ )

Reason for revert:
Caused check_licenses to fail:

https://build.chromium.org/p/chromium/builders/Linux/builds/66701

Original issue's description:
> Fix typo in install-sysroot.py
>
> install-sysroot.py was intended to default to installing
> the sysroot ia32, but within this script 'i386' is used to
> refer to this architecture.
>
> This most likely went unnoticed since the ia32 builder
> either use branding=Official, or explicitly set
> use_sysroot=1, or have a complete set of packages for
> cross building on the host system.
>
> BUG=504446
>
> Committed: https://crrev.com/1d62049b4c176fbd43bed90fc9a76273b11ad406
> Cr-Commit-Position: refs/heads/master@{#347821}

TBR=dpranke@chromium.org,sbc@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=504446

Review URL: https://codereview.chromium.org/1315773003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#347839}

ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend