PSA: CSS property 'font-size-adjust' will no longer be a Web Platform Experimental Feature

[Xiaocheng Hu]

(This is not a deprecation/removal announcement)

We are currently switching its status from "experimental" to "test". As a result, the feature will no longer be enabled from about:flags "Experimental Web Platform features".

To continue dev trial, a command line flag "--enable-blink-features=CSSFontSizeAdjust" is now needed.

The reason for the change is to prevent unexpected interactions between the currently flawed implementation of font-size-adjust and a new (and higher prioritized) feature, @font-face descriptor size-adjust, that is being prototyped. See CLs 1 and 2 for more details.

For the long term, we will fix the interaction before shipping font-size-adjust.

[Xiaocheng Hu]

The change has now landed.