Add custom automation peer for various controls #647
Description
The following controls should provide a custom automation peer:
- Button
- DropDownButton
- SplitButton
- CheckBox
- InRibbonGallery
- ScreenTip
- Backstage
- BackstageTabControl
- BackstageTabItem
- StartScreen
- ComboBox
- Ribbon
- RibbonGroupBox
- RibbonTabControl
- RibbonTabItem
- RadioButton
- Spinner
- TextBox
- ToggleButton
- TwoLineLabel