* Electron Version: 2.0.0
* Operating System (Platform and Version): Windows 10
* Last known working Electron version: before commit bb5eecc16cff8053c7b04e0b9396803fbbb8c4df

**Expected Behavior**
Width and height of a window should not change while being dragged 

**Actual behavior**
Width and height become smaller.

**To Reproduce**
Create a window with:
  var mainWindow = new BrowserWindow({width: 1024, height: 880, x: 30, y: 30,
            resizable: false })

Then drag the window.  Width and height become smaller than specified (1024, 880)

**Additional Information**
NativeWindowViews::SetBounds calls SetMin/MaxSize(bounds) when resizable_ is false.  bounds get adjusted to smaller  numbers by WindowBoundsToContentBounds.

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);
}
}