AnglePickerControl: Deprecate margin bottom

packages/components/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Breaking Changes
+
+-   `AnglePickerControl`: Deprecate bottom margin style. Add a `__nextHasNoMarginBottom` prop to start opting into the margin-free styles that will become the default in a future version, currently scheduled to be WordPress 6.4 ([#43867](https://github.com/WordPress/gutenberg/pull/43867)).
+
 ### Bug Fix
 
 -   `Popover`: enable auto-updating every animation frame ([#43617](https://github.com/WordPress/gutenberg/pull/43617)).

packages/components/src/angle-picker-control/README.md

@@ -11,7 +11,7 @@ import { AnglePickerControl } from '@wordpress/components';
 
 const MyAnglePicker = () => {
 	const [ angle, setAngle ] = useState();
-	return <AnglePickerControl value={ angle } onChange={ setAngle } />;
+	return <AnglePickerControl value={ angle } onChange={ setAngle } __nextHasNoMarginBottom />;
 };
 ```
 
@@ -39,3 +39,11 @@ A function that receives the new value of the input.
 
 -   Type: `function`
 -   Required: Yes
+
+### __nextHasNoMarginBottom
+
+Start opting into the new margin-free styles that will become the default in a future version, currently scheduled to be WordPress 6.4. (The prop can be safely removed once this happens.)
+
+-   Type: `boolean`
+-   Required: No
+-   Default: `false`

packages/components/src/angle-picker-control/index.js

@@ -6,6 +6,7 @@ import classnames from 'classnames';
 /**
  * WordPress dependencies
  */
+import deprecated from '@wordpress/deprecated';
 import { __ } from '@wordpress/i18n';
 
 /**
@@ -27,6 +28,17 @@ export default function AnglePickerControl( {
 	onChange,
 	value,
 } ) {
+	if ( ! __nextHasNoMarginBottom ) {
+		deprecated(
+			'Bottom margin styles for wp.components.AnglePickerControl',
+			{
+				since: '6.1',
+				version: '6.4',
+				hint: 'Set the `__nextHasNoMarginBottom` prop to true to start opting into the new styles, which will become the default in a future version.',
+			}
+		);
+	}
+
 	const handleOnNumberChange = ( unprocessedValue ) => {
 		const inputValue =
 			unprocessedValue !== '' ? parseInt( unprocessedValue, 10 ) : 0;

packages/components/src/angle-picker-control/stories/index.js

@@ -11,9 +11,6 @@ import AnglePickerControl from '../';
 export default {
 	title: 'Components/AnglePickerControl',
 	component: AnglePickerControl,
-	argTypes: {
-		__nextHasNoMarginBottom: { control: { type: 'boolean' } },
-	},
 };
 
 const AnglePickerWithState = ( args ) => {
@@ -24,3 +21,6 @@ const AnglePickerWithState = ( args ) => {
 };
 
 export const Default = AnglePickerWithState.bind( {} );
+Default.args = {
+	__nextHasNoMarginBottom: true,
+};