No way to reset only chromium files that have been modified locally

[petemill]

Description

When a developer wants to reset all chromium files to the current brave-core patched state, but doesn't want to end up touching every patched file by performing a hard reset, which would result in a lengthy build, there is no recourse to do so, unless they remember every file that was changed and do git checkout -- [file] manually for each file.
npm run sync will do this (only reset patched files which have been locally modifieid), but only for files that Brave has a .patch file for.