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### Preflight Checklist
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* [x] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
* [x] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
* [x] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

### Problem Description
<!-- Is your feature request related to a problem? Please add a clear and concise description of what the problem is. -->

BrowserWindow currently offers "moved" event related to moving a window, but it only has "will-resize" and "resize" events. I want to save the current dimensions of a window when its size changes, but "will-resize" and "resize" events get fired at every single pixel change. This results in an unnecessarily large number of saving function calls or a need for debouncing the event.

### Proposed Solution
<!-- Describe the solution you'd like in a clear and concise manner -->

Adding "resized" event to BrowserWindow will solve the problem stated above.

### Alternatives Considered
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### Additional Information
<!-- Add any other context about the problem here. -->

shell/browser/api/electron_api_base_window.cc
const gin_helper::Dictionary& options)
    : BaseWindow(args->isolate(), options) {
  InitWithArgs(args);
  
  window()->InitFromOptions(options);
}
BaseWindow::~BaseWindow() {
  if (!window_->IsClosed())
    window_->CloseImmediately();
  
  
  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, window_.release());
  
  self_ref_.Reset();
}
void BaseWindow::InitWith(v8::Isolate* isolate, v8::Local<v8::Object> wrapper) {
  AttachAsUserData(window_.get());
  gin_helper::TrackableObject<BaseWindow>::InitWith(isolate, wrapper);
  
  
  if (!parent_window_.IsEmpty()) {
    gin::Handle<BaseWindow> parent;
    gin::ConvertFromV8(isolate, GetParentWindow(), &parent);
    DCHECK(!parent.IsEmpty());
    parent->child_windows_.Set(isolate, weak_map_id(), wrapper);
  }
  
  self_ref_.Reset(isolate, wrapper);
}
void BaseWindow::WillCloseWindow(bool* prevent_default) {