Found while investigating #25021

ElectronBrowserMainParts has a periodic timer that is used to trigger GC once a minute even on an idle system. While one wakeup per minute isn't bad, it's also been in there [since 2014](https://github.com/electron/electron/commit/4dd78480846557370dd53789d50e6cb0d6a81bcd) and may or may not still be necessary. It might be worth seeing what happens to memory overhead if this is disabled and/or triggered with a different mechanism.

```c++
  // Start idle gc.
  gc_timer_.Start(
      FROM_HERE, base::TimeDelta::FromMinutes(1),
      base::Bind(&v8::Isolate::LowMemoryNotification,
                 base::Unretained(js_env_->isolate())));
```


shell/browser/electron_browser_main_parts.cc
PreMainMessageLoopStartCommon();
}
#endif
void ElectronBrowserMainParts::PreMainMessageLoopStartCommon() {
#if defined(OS_MAC)
  InitializeMainNib();
  RegisterURLHandler();
#endif
  media::SetLocalizedStringProvider(MediaStringProvider);
}
device::mojom::GeolocationControl*
ElectronBrowserMainParts::GetGeolocationControl() {
  if (!geolocation_control_) {
    content::GetDeviceService().BindGeolocationControl(
        geolocation_control_.BindNewPipeAndPassReceiver());
  }
  return geolocation_control_.get();
}
IconManager* ElectronBrowserMainParts::GetIconManager() {
  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  if (!icon_manager_.get())
    icon_manager_ = std::make_unique<IconManager>();
  return icon_manager_.get();
}
}