* Electron version: 8.0.0
* Operating system: Linux - Fedora 31 - Kernel 5.4.13-201.fc31.x86_64

### Expected behavior
The local store should persist items even though the app is terminated as soon as the item was added.

### Actual behavior
If the app is terminated in less than 2 seconds after an item is added to local storage, the value is not available after the app is reopened.

### How to reproduce
1. Create a new electron app 
(I used the quick start from the website git clone https://github.com/electron/electron-quick-start)

0. Run the app using `npm start`

0. Run a JavaScript code that adds a new key/value pair to localStorage
````
localStorage.setItem("my-key", "my-value")
````

0. Within 3 seconds, terminate the app (killing the process or pressing Ctrl + C)
NOTE: If the app is closed properly (pressing Alt + F4 or click on the "X"), this issue does not occur.

0. Run the app again

0. Check for the localStorage items
````
localStorage.getItem("my-key")
````
Or in the Application tab from Developer Tools.

Both cases are not available neither the key nor the value
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() {