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
container->erase(iter);
}
#if defined(OS_WIN)
void AdjustUIFont(gfx::win::FontAdjustment* font_adjustment) {
  l10n_util::NeedOverrideDefaultUIFont(&font_adjustment->font_family_override,
                                       &font_adjustment->font_scale);
  font_adjustment->font_scale *= display::win::GetAccessibilityFontScale();
}
int GetMinimumFontSize() {
  int min_font_size;
  base::StringToInt(l10n_util::GetStringUTF16(IDS_MINIMUM_UI_FONT_SIZE),
                    &min_font_size);
  return min_font_size;
}
#endif
base::string16 MediaStringProvider(media::MessageId id) {
  switch (id) {
    case media::DEFAULT_AUDIO_DEVICE_NAME:
      return base::ASCIIToUTF16("Default");
#if defined(OS_WIN)
    case media::COMMUNICATIONS_AUDIO_DEVICE_NAME:
      return base::ASCIIToUTF16("Communications");
#endif
    default:
      return base::string16();
  }
}
#if defined(OS_LINUX)
void OverrideLinuxAppDataPath() {