It looks like this is very nearly ready in upstream Chromium, apparently just blocked on [this CL](https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2037803), which has to do with an upload issue on Fedora.

Upstream tracking issue: https://bugs.chromium.org/p/crashpad/issues/detail?id=30

Once this CL is landed we should consider enabling Crashpad on Linux and removing our Breakpad-related code.
shell/app/electron_main.cc
params.sandbox_info = &sandbox_info;
  electron::ElectronCommandLine::Init(arguments.argc, arguments.argv);
  return content::ContentMain(params);
}
#elif defined(OS_LINUX)  
int main(int argc, char* argv[]) {
  FixStdioStreams();
#if BUILDFLAG(ENABLE_RUN_AS_NODE)
  if (electron::fuses::IsRunAsNodeEnabled() && IsEnvSet(electron::kRunAsNode)) {
    base::i18n::InitializeICU();
    base::AtExitManager atexit_manager;
    return electron::NodeMain(argc, argv);
  }
#endif
  electron::ElectronMainDelegate delegate;
  content::ContentMainParams params(&delegate);
  params.argc = argc;
  params.argv = const_cast<const char**>(argv);
  electron::ElectronCommandLine::Init(argc, argv);
  return content::ContentMain(params);
}
#else  
int main(int argc, char* argv[]) {
  FixStdioStreams();
#if BUILDFLAG(ENABLE_RUN_AS_NODE)
  if (electron::fuses::IsRunAsNodeEnabled() && IsEnvSet(electron::kRunAsNode)) {
    return ElectronInitializeICUandStartNode(argc, argv);
  }
#endif
#if defined(HELPER_EXECUTABLE) && !defined(MAS_BUILD)