* 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
DCHECK(base::ThreadTaskRunnerHandle::IsSet());
  
  
  js_env_ = std::make_unique<JavascriptEnvironment>(node_bindings_->uv_loop());
  v8::HandleScope scope(js_env_->isolate());
  node_bindings_->Initialize();
  
  node::Environment* env = node_bindings_->CreateEnvironment(
      js_env_->context(), js_env_->platform());
  node_env_ = std::make_unique<NodeEnvironment>(env);
  env->set_trace_sync_io(env->options()->trace_sync_io);
  
  electron_bindings_->BindTo(js_env_->isolate(), env->process_object());
  
  node_bindings_->LoadEnvironment(env);
  
  node_bindings_->set_uv_env(env);
  
  
  
  
  base::FeatureList::ClearInstanceForTesting();
  InitializeFeatureList();
  
  fake_browser_process_->PostEarlyInitialization();
}
int ElectronBrowserMainParts::PreCreateThreads() {