* **Electron Version:**
  4.0.2
* **Operating System:**
  macOS 10.14.3
* **Last Known Working Electron version:**:
  1.7

### Expected Behavior
When creating a BrowserWindow it should not appear in the dock menu by defaults.

### Actual Behavior
It appears in the dock menu (example: `raven` in https://electronjs.org/docs/tutorial/macos-dock)

### To Reproduce
Just create new BrowserWindow, then right click on the app icon in the dock. (see https://electronjs.org/docs/tutorial/macos-dock)

At least it should be a way to control that, this can be achieve for top level window with:
`[window_ setExcludedFromWindowsMenu:YES];`, indeed [window isExcludedFromWindowsMenu] returns false by default, see

https://developer.apple.com/documentation/appkit/nsapplication/1428625-removewindowsitem
`Use the isExcludedFromWindowsMenu method of NSWindow if you want the item to remain excluded from the Window menu.`
https://developer.apple.com/documentation/appkit/nswindow/1419175-isexcludedfromwindowsmenu

atom/browser/api/atom_api_top_level_window.cc
std::vector<int> result(2);
  gfx::Size size = window_->GetMaximumSize();
  result[0] = size.width();
  result[1] = size.height();
  return result;
}
void TopLevelWindow::SetSheetOffset(double offsetY, mate::Arguments* args) {
  double offsetX = 0.0;
  args->GetNext(&offsetX);
  window_->SetSheetOffset(offsetX, offsetY);
}
void TopLevelWindow::SetResizable(bool resizable) {
  window_->SetResizable(resizable);
}
bool TopLevelWindow::IsResizable() {
  return window_->IsResizable();
}
void TopLevelWindow::SetMovable(bool movable) {
  window_->SetMovable(movable);
}
bool TopLevelWindow::IsMovable() {
  return window_->IsMovable();
}
void TopLevelWindow::SetMinimizable(bool minimizable) {
  window_->SetMinimizable(minimizable);
}
bool TopLevelWindow::IsMinimizable() {
  return window_->IsMinimizable();
}
void TopLevelWindow::SetMaximizable(bool maximizable) {