| ⇢ | A | HTMLFormElement added | |
| ⇢ | A | HTMLFormFieldLayout added | |
| ⇢ | A | HTMLFormActionFieldLayout added |
| ⇢ | A | HTMLFormElement::initializeHTMLFormElement() added | |
| ⇢ | A | HTMLFormFieldLayout::__construct() added | |
| ⇢ | A | HTMLFormActionFieldLayout::__construct() added | |
| ⇢ | A | HTMLFormFieldLayout::getJavaScriptClassName() added | |
| ⇢ | A | HTMLFormActionFieldLayout::getJavaScriptClassName(... added | |
| B | ↘ | C | HTMLFormField::getOOUI() got worse |