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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
<!-- A clear and concise description of any alternative solutions or features you've considered. -->

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

shell/browser/native_window_views_win.cc
WPARAM w_param,
                                                  LPARAM l_param) {
  if (n_code < 0) {
    return CallNextHookEx(NULL, n_code, w_param, l_param);
  }
  
  
  
  if (w_param == WM_MOUSEMOVE) {
    for (auto* window : forwarding_windows_) {
      
      
      
      
      RECT client_rect;
      GetClientRect(window->legacy_window_, &client_rect);
      POINT p = reinterpret_cast<MSLLHOOKSTRUCT*>(l_param)->pt;
      ScreenToClient(window->legacy_window_, &p);
      if (PtInRect(&client_rect, p)) {
        WPARAM w = 0;  
        LPARAM l = MAKELPARAM(p.x, p.y);
        PostMessage(window->legacy_window_, WM_MOUSEMOVE, w, l);
      }
    }
  }
  return CallNextHookEx(NULL, n_code, w_param, l_param);
}
}