Relevant info from scottmg@:
"I had been been using http://ctags.sourceforge.net/ for years, but after Gab's email I saw that some people are trying to rejuvenate it at ctags.io. I just tried adding the option --map-C++=+.mojom and with that, vim is able to jump to mojom interfaces, enums, and structs, but unfortunately not to interface methods, which would be the most useful. It looks like it has some extension points so it'd probably be pokeable, but I didn't feel that motivated yet. (The x64 head build also crashed when I tried to run it on the whole chrome tree recursively, but that was probably unrelated to adding mojom to the spec.)"
Comment 1 by scottmg@chromium.org
, May 30 2017