I was a C++ Chrome developer till 2020, and I primarily used Sublime Text because of speed, and I found VSCode weekly releases too distracting.

I indexed code locally with CTags, and then used SublimeText CTags extension for navigation. This worked great for my local branches. When I needed to dig deep, I'd use source.chromium.org which indexes perfectly.

# ctags command that indexes just Google's chrome code ctags --languages=C++ --exclude=third_party --exclude=.git --exclude=build --exclude=out --exclude=tools --exclude=mojo --exclude=base -R -f .tmp_tags ctags --languages=C++ -a -R -f .tmp_tags third_party/blink mv .tmp_tags .tags