Revert of Swap the main frame in --site-per-process mode too. (patchset #5 id:80001 of https://codereview.chromium.org/
1106673002/)
Reason for revert:
This breaks some tests on the site isolation bots.
Original issue's description:
> Swap the main frame in --site-per-process mode too.
>
> Calling swap() is required to set up a lot of required state in Blink
> for the WebRemoteFrame. Without this, bad things happen.
>
> BUG=475003
>
> Committed: https://crrev.com/
9463868c8a2d30b6a81db9fd2b61e8a5935ac347
> Cr-Commit-Position: refs/heads/master@{#329012}
TBR=creis@chromium.org,nasko@chromium.org,alexmos@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=475003
Review URL: https://codereview.chromium.org/
1137833002
Cr-Commit-Position: refs/heads/master@{#329024}