Brave version gen not building with fresh build

[bbondy]

At least on Linux:

garrettr@ubuntu:~/brave$ yarn build
yarn run v1.7.0
$ node ./scripts/commands.js build
touch original files overridden by chromium_src...
<snip>
building brave...isystem../../buildtools/third_party/libc++abi/trunk/include --sysroot=../../build/linux/debian_sid_amd64-sysroot -fvisibility-inlines-hidden -c ../../brave/browser/version_info_values.cc -o obj/brave/browser/browser_process/version_info_values.o
In file included from ../../brave/browser/version_info_values.cc:5:
../../brave/browser/version_info_values.h:9:10: fatal error: 'brave/version.h' file not found
#include "brave/version.h"
         ^~~~~~~~~~~~~~~~~
1 error generated.
[2290/13166] CXX obj/third_party/blink/public/mojom/mojom_core_blink/service_worker.mojom-blink.o
ninja: build stopped: subcommand failed.

Regressed here:
brave/brave-core#237