PSA: Standalone devtools-frontend builds will bundle the build output by default

[Simon Zünd]

Hi folks,

We made a small change to the DevTools build system. We'll now bundle the DevTools build output by default. For debug builds this is simply a concatenation of all related files, where-as for release builds we'll minify the same as before.

The motivation is improved runtime on our bots when running tests in various forms (e2e, unit, browser_tests).

As this comes at a cost in build time, you can opt out with setting the GN arg:

devtools_bundle = false

Let me know if you run into any issues.

Cheers, Simon