[CheckboxListTile] exposes contentPadding property of ListTile. (#57868)

packages/flutter/lib/src/material/checkbox_list_tile.dart

@@ -20,7 +20,7 @@ import 'theme_data.dart';
 /// The [value], [onChanged], [activeColor] and [checkColor] properties of this widget are
 /// identical to the similarly-named properties on the [Checkbox] widget.
 ///
-/// The [title], [subtitle], [isThreeLine], and [dense] properties are like
+/// The [title], [subtitle], [isThreeLine], [dense], and [contentPadding] properties are like
 /// those of the same name on [ListTile].
 ///
 /// The [selected] property on this widget is similar to the [ListTile.selected]
@@ -267,6 +267,7 @@ class CheckboxListTile extends StatelessWidget {
     this.selected = false,
     this.controlAffinity = ListTileControlAffinity.platform,
     this.autofocus = false,
+    this.contentPadding,
   }) : assert(value != null),
        assert(isThreeLine != null),
        assert(!isThreeLine || subtitle != null),
@@ -356,6 +357,14 @@ class CheckboxListTile extends StatelessWidget {
   /// {@macro flutter.widgets.Focus.autofocus}
   final bool autofocus;
 
+  /// Defines insets surrounding the tile's contents.
+  ///
+  /// This value will surround the [Checkbox], [title], [subtitle], and [secondary]
+  /// widgets in [CheckboxListTile].
+  ///
+  /// When the value is null, the `contentPadding` is `EdgeInsets.symmetric(horizontal: 16.0)`.
+  final EdgeInsetsGeometry contentPadding;
+
   @override
   Widget build(BuildContext context) {
     final Widget control = Checkbox(
@@ -392,6 +401,7 @@ class CheckboxListTile extends StatelessWidget {
           onTap: onChanged != null ? () { onChanged(!value); } : null,
           selected: selected,
           autofocus: autofocus,
+          contentPadding: contentPadding,
         ),
       ),
     );

packages/flutter/test/material/checkbox_list_tile_test.dart

@@ -115,4 +115,33 @@ void main() {
     expect(Focus.of(childKey.currentContext, nullOk: true).hasPrimaryFocus, isFalse);
   });
 
+  testWidgets('CheckoxListTile contentPadding test', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      wrap(
+        child: const Center(
+          child: CheckboxListTile(
+            value: false,
+            onChanged: null,
+            title: Text('Title'),
+            contentPadding: EdgeInsets.fromLTRB(10, 18, 4, 2),
+          ),
+        ),
+      )
+    );
+
+    final Rect paddingRect = tester.getRect(find.byType(Padding));
+    final Rect checkboxRect = tester.getRect(find.byType(Checkbox));
+    final Rect titleRect = tester.getRect(find.text('Title'));
+
+    final Rect tallerWidget = checkboxRect.height > titleRect.height ? checkboxRect : titleRect;
+
+    // Check the offsets of CheckBox and title after padding is applied.
+    expect(paddingRect.right, checkboxRect.right + 4);
+    expect(paddingRect.left, titleRect.left - 10);
+
+    // Calculate the remaining height from the default ListTile height.
+    final double remainingHeight = 56 - tallerWidget.height;
+    expect(paddingRect.top, tallerWidget.top - remainingHeight / 2 - 18);
+    expect(paddingRect.bottom, tallerWidget.bottom + remainingHeight / 2 + 2);
+  });
 }