Source: chromium-browser Version: 62.0.3202.89-1 Please switch chromium to build with gtk3. I believe Google Chrome defaults to gtk3. Ubuntu's chromium-browser switched months ago (in version 59 I believe).
I am guessing you can just drop libgtk2.0-dev from Build-Depends and change use_gtk3=false to true in debian/rules Thanks, Jeremy Bicha

