[matsche]

> The pdl files are the canonical protocol definitions and are maintained manually by the devtools team [0].

The JSON protocol definition files are then in fact being generated from those pdl files. You find them mirrored in the devtools-protocol-repo [1]

[0] https://chromedevtools.github.io/devtools-protocol/ [1] https://github.com/ChromeDevTools/devtools-protocol/