[photonios]

Chromium is open-source and the developers write pretty good commit messages about _why_ they're changing something.

As for your example with --disable-features=Windows10CustomTitleBar, you can view the motivation for the relevant change here: https://source.chromium.org/chromium/chromium/src/+/549aa8ae...

It wasn't removed, it just changed. It's not a feature flag anymore, just a normal flag: --disable-windows10-custom-titlebar.

This appears to be a purely technical decision. I am not even sure a PM was involved.

[markus_zhang]

OK thanks!