According to MG Siegler, Chrome is in the bizdev-required proprietary 'with Google' part of Android, not the Open Source part.
http://parislemon.com/post/17215781807/chrome-for-android-th...
That means we're stuck with legacy browsers in existing Androids and in the non-Google-blessed world (Amazon Fire and the billion Chinese phones and tablets).
Interesting. The chromium blog post linked above mentions upstreaming a bunch of new components, so maybe it will be like the Chrome/Chromium situation? Here's hoping...