Reason for revert:
Trying to fix this skipping the check if we are building webrtc within chromium.
Original issue's description:
> Revert of Setting is_component_build to false by default (patchset #5 id:80001 of https://codereview.webrtc.org/2728643003/ )
>
> Reason for revert:
> Breaks chrome rolls
>
> Original issue's description:
> > Setting is_component_build to false by default
> >
> > Webrtc does not support component builds so we want to override
> > the chromium default value (which can be true on debug builds if the
> > os is different from iOS).
> >
> > Please note that the user can set this value to true in two ways:
> >
> > - using --args (e.g.: gn gen out/default --args='is_component_build=true'
> > - changing the value in the args.gn file
> >
> > But in both cases the value will be ignored because we don't use the
> > 'component' template but we rely directly on 'rtc_static_library' and
> > 'rtc_shared_library'.
> >
> > BUG=webrtc:6975
> > NOTRY=True
> >
> > Review-Url: https://codereview.webrtc.org/2728643003
> > Cr-Commit-Position: refs/heads/master@{#17020}
> > Committed: 2cb3944ba7
>
> TBR=kjellander@webrtc.org,mbonadei@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6975
>
> Review-Url: https://codereview.webrtc.org/2731703004
> Cr-Commit-Position: refs/heads/master@{#17025}
> Committed: 2d9e7685a5TBR=kjellander@webrtc.org,tommi@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6975
Review-Url: https://codereview.webrtc.org/2729243003
Cr-Commit-Position: refs/heads/master@{#17027}
9660627c9d