Anny Gakhokidze bd0938ed77 Bug 1589102 - Part 3: Enable about:blank loads to take place via DocumentChannel, r=mattwoodrow
In process selection logic, ensure that we don't use the original URI for
about:blank and instead use the result principal. If the about:blank load has a
null principal, then revert to using the original URI.

Also, remove an extra about:blank load when an nsFrameLoaderOwner is changing
remoteness to prevent races.

Differential Revision: https://phabricator.services.mozilla.com/D85081
2020-08-28 17:20:40 +00:00
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