@GatorsFan :-
Sorry to have to correct your assertion, but Chromium and Chrome ARE both from the same company.....Big Brother. They ARE, however, treated as being developed by independent organizations (see below).
When the browser was being developed between 2006 to 2008, there was NO differentiation. From the Wikipedia article on Chrome:-
https://en.wikipedia.org/wiki/Google_Chrome
Google set-up the Chromium Project as a completely independent organization, in order to forestall any outcry against closed-source, proprietary code.
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All the "cutting-edge" development work takes place at the Chromium Project itself. The Project has what amounts to a fleet of semi-autonomous bots, which constantly "slipstream" patches that are sent in, round the clock, from the global army of contributory devs working on the Project, and churn out build after updated build, 24/7, non-stop.
(Better than 95% of these builds never make it into the public domain, being put together purely for testing & evaluation purposes).
The "oversight" committee at Google's offices monitor the Project closely, several times a day. As soon as a "stable" build is identified, around the time-frame allotted for the next regular update, the committee will alert the browser team. These then grab the source code for that specific build, add the Google-approved "proprietary' bits & re-compile it themselves against a rather
older build environment.
This last does have method behind its seeming madness. Chromium is always built against the very newest versions of everything.......but Google deliberately re-compile Chrome against older components for one simple reason; because not everybody religiously updates their systems the instant updates appear. John & Jane Doe, when left to their own devices, wouldn't bother with updating at all, so building the browser this way makes sure it remains available to - and usable by - the greatest number of people worldwide.......all of which helps to boost Chrome's already dominant usage figures still further..!
(I was part of the beta test programme during the first half of 2008, up until the final stable release of v1.0 in the Autumn of that year (and have used them ever since).....so I've always had something of a keen, 'personal' interest in the browser's development history.)
Mike.