* **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
.SetMethod("setEnabled", &TopLevelWindow::SetEnabled)
      .SetMethod("maximize", &TopLevelWindow::Maximize)
      .SetMethod("unmaximize", &TopLevelWindow::Unmaximize)
      .SetMethod("isMaximized", &TopLevelWindow::IsMaximized)
      .SetMethod("minimize", &TopLevelWindow::Minimize)
      .SetMethod("restore", &TopLevelWindow::Restore)
      .SetMethod("isMinimized", &TopLevelWindow::IsMinimized)
      .SetMethod("setFullScreen", &TopLevelWindow::SetFullScreen)
      .SetMethod("isFullScreen", &TopLevelWindow::IsFullscreen)
      .SetMethod("setBounds", &TopLevelWindow::SetBounds)
      .SetMethod("getBounds", &TopLevelWindow::GetBounds)
      .SetMethod("isNormal", &TopLevelWindow::IsNormal)
      .SetMethod("getNormalBounds", &TopLevelWindow::GetNormalBounds)
      .SetMethod("setSize", &TopLevelWindow::SetSize)
      .SetMethod("getSize", &TopLevelWindow::GetSize)
      .SetMethod("setContentBounds", &TopLevelWindow::SetContentBounds)
      .SetMethod("getContentBounds", &TopLevelWindow::GetContentBounds)
      .SetMethod("setContentSize", &TopLevelWindow::SetContentSize)
      .SetMethod("getContentSize", &TopLevelWindow::GetContentSize)
      .SetMethod("setMinimumSize", &TopLevelWindow::SetMinimumSize)
      .SetMethod("getMinimumSize", &TopLevelWindow::GetMinimumSize)
      .SetMethod("setMaximumSize", &TopLevelWindow::SetMaximumSize)
      .SetMethod("getMaximumSize", &TopLevelWindow::GetMaximumSize)
      .SetMethod("setSheetOffset", &TopLevelWindow::SetSheetOffset)
      .SetMethod("setResizable", &TopLevelWindow::SetResizable)
      .SetMethod("isResizable", &TopLevelWindow::IsResizable)
      .SetMethod("setMovable", &TopLevelWindow::SetMovable)
      .SetMethod("moveTop", &TopLevelWindow::MoveTop)
      .SetMethod("isMovable", &TopLevelWindow::IsMovable)
      .SetMethod("setMinimizable", &TopLevelWindow::SetMinimizable)