* 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
UINT msg,
                                                 WPARAM w_param,
                                                 LPARAM l_param,
                                                 UINT_PTR subclass_id,
                                                 DWORD_PTR ref_data) {
  NativeWindowViews* window = reinterpret_cast<NativeWindowViews*>(ref_data);
  switch (msg) {
    case WM_MOUSELEAVE: {
      
      
      
      
      
      
      
      
      
      
      if (window->forwarding_mouse_messages_) {
        return 0;
      }
      break;
    }
  }
  return DefSubclassProc(hwnd, msg, w_param, l_param);
}
LRESULT CALLBACK NativeWindowViews::MouseHookProc(int n_code,